remote: pass NULL to read_ref_full() because object ID is not needed

rscharfe · gitster · commit 99f86bde8332 · 2019-12-11T13:48:46.000-08:00
read_ref_full() wraps refs_read_ref_full(), which in turn wraps
refs_resolve_ref_unsafe(), which handles a NULL oid pointer of callers
not interested in the resolved object ID.  Make use of that feature to
document that mv() is such a caller.

Signed-off-by: René Scharfe &lt;l.s.r@web.de&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/builtin/remote.c b/builtin/remote.c
@@ -693,9 +693,8 @@ static int mv(int argc, const char **argv)
 	for (i = 0; i < remote_branches.nr; i++) {
 		struct string_list_item *item = remote_branches.items + i;
 		int flag = 0;
-		struct object_id oid;
 
-		read_ref_full(item->string, RESOLVE_REF_READING, &oid, &flag);
+		read_ref_full(item->string, RESOLVE_REF_READING, NULL, &flag);
 		if (!(flag & REF_ISSYMREF))
 			continue;
 		if (delete_ref(NULL, item->string, NULL, REF_NO_DEREF))
