Restore pos_is_ok StateInfo verify with full check enabled

pb00067 · pb00067 · commit 8c5ba9082de2 · 2023-03-14T08:29:02.000+01:00
no functional change
bench:  4747020
diff --git a/src/position.cpp b/src/position.cpp
@@ -1324,6 +1324,12 @@ bool Position::pos_is_ok() const {
           if (p1 != p2 && (pieces(p1) & pieces(p2)))
               assert(0 && "pos_is_ok: Bitboards");
 
+    StateInfo si = *st;
+    ASSERT_ALIGNED(&si, Eval::NNUE::CacheLineSize);
+
+    set_state();
+    if (std::memcmp(&si, st, sizeof(StateInfo)))
+        assert(0 && "pos_is_ok: State");
 
   for (Piece pc : Pieces)
       if (   pieceCount[pc] != popcount(pieces(color_of(pc), type_of(pc)))
