Fix bugprone-branch-clone warnings #53

/luavela/src/jit/lj_asm_x86.h:2565:3: error: switch has 2 consecutive identical branches [bugprone-branch-clone,-warnings-as-errors]
  case IR_CARG:
  ^
/luavela/src/jit/lj_asm_x86.h:2570:10: note: last of these clones ends here
    break; /* no op; IR -> mcode will happen in the finalizer (TVARGF) */
         ^
/luavela/src/jit/lj_ffrecord.c:828:22: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
  if (!(op < IR_BROL ? UJ_TARGET_MASKSHIFT : UJ_TARGET_MASKROT) &&
                     ^
/luavela/src/jit/opt/fold.c:1538:26: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
  if ((fins->o < IR_BROL ? UJ_TARGET_MASKSHIFT : UJ_TARGET_MASKROT) &&
                         ^
/luavela/src/lauxlib.h:127:14: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
        char buffer[LUAL_BUFFERSIZE];
                    ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/base.c:556:37: error: repeated branch in conditional chain [bugprone-branch-clone,-warnings-as-errors]
  else if (co->status == LUA_YIELD) s = "suspended";
                                    ^
/luavela/src/lib/base.c:556:52: note: end of the original
  else if (co->status == LUA_YIELD) s = "suspended";
                                                   ^
/luavela/src/lib/base.c:560:8: note: clone 1 starts here
  else s = "suspended";
       ^
/luavela/src/lib/base.c:557:29: error: repeated branch in conditional chain [bugprone-branch-clone,-warnings-as-errors]
  else if (co->status != 0) s = "dead";
                            ^
/luavela/src/lib/base.c:557:39: note: end of the original
  else if (co->status != 0) s = "dead";
                                      ^
/luavela/src/lib/base.c:559:33: note: clone 1 starts here
  else if (co->top == co->base) s = "dead";
                                ^
/luavela/src/lib/ffi.c:576:21: error: repeated branch in conditional chain [bugprone-branch-clone,-warnings-as-errors]
    if (ct1 == ct2) {
                    ^
/luavela/src/lib/ffi.c:578:6: note: end of the original
    } else if (ctype_type(ct1->info) == ctype_type(ct2->info) &&
     ^
/luavela/src/lib/ffi.c:585:49: note: clone 1 starts here
               ct1 == ctype_rawchild(cts, ct2)) {
                                                ^
/luavela/src/lib/io.c:115:14: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
  size_t m = LUAL_BUFFERSIZE, n = 0, ok = 0;
             ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/io.c:133:12: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
  for (m = LUAL_BUFFERSIZE, n = 0; ; m += m) {
           ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/io.c:304:43: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
  size_t sz = (size_t)uj_lib_optint(L, 3, LUAL_BUFFERSIZE);
                                          ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/os.c:164:9: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
        luaL_addchar(&b, *s);
        ^
/luavela/src/lauxlib.h:131:32: note: expanded from macro 'luaL_addchar'
        ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
                                      ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/string.c:597:9: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
        luaL_addchar(b, news[i]);
        ^
/luavela/src/lauxlib.h:131:32: note: expanded from macro 'luaL_addchar'
        ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
                                      ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/lib/string.c:669:7: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
      luaL_addchar(&b, *src++);
      ^
/luavela/src/lauxlib.h:131:32: note: expanded from macro 'luaL_addchar'
        ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
                                      ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/luajit.c:79:5: error: repeated branch in conditional chain [bugprone-branch-clone,-warnings-as-errors]
                                return 0;
                                ^
/luavela/src/luajit.c:79:13: note: end of the original
                                return 0;
                                        ^
/luavela/src/luajit.c:84:5: note: clone 1 starts here
                                return 0;
                                ^
/luavela/src/profile/uj_profile.c:137:2: error: switch has 2 consecutive identical branches [bugprone-branch-clone,-warnings-as-errors]
        case PS_ERROR:
        ^
/luavela/src/profile/uj_profile.c:140:9: note: last of these clones ends here
                return;
                      ^
/luavela/src/profile/uj_symtab.c:47:3: error: switch has 2 consecutive identical branches [bugprone-branch-clone,-warnings-as-errors]
                case (~LJ_TTRACE): {
                ^
/luavela/src/profile/uj_symtab.c:53:4: note: last of these clones ends here
                }
                 ^
/luavela/src/uj_capi.c:272:39: error: repeated branch in conditional chain [bugprone-branch-clone,-warnings-as-errors]
        } else if (gettag(o1) != gettag(o2)) {
                                             ^
/luavela/src/uj_capi.c:274:3: note: end of the original
        } else if (tvispri(o1)) {
         ^
/luavela/src/uj_capi.c:280:29: note: clone 1 starts here
        } else if (!tvistabud(o1)) {
                                   ^
/luavela/src/uj_capi_aux.c:151:18: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
        return (size_t)(LUAL_BUFFERSIZE - bufflen(B));
                        ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/uj_capi_aux.c:194:3: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
                luaL_addchar(B, *s++);
                ^
/luavela/src/lauxlib.h:131:32: note: expanded from macro 'luaL_addchar'
        ((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
                                      ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^
/luavela/src/uj_capi_aux.c:487:11: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
        char buf[LUAL_BUFFERSIZE];
                 ^
/luavela/src/luaconf.h:150:41: note: expanded from macro 'LUAL_BUFFERSIZE'
#define LUAL_BUFFERSIZE (BUFSIZ > 16384 ? 8192 : BUFSIZ)
                                        ^