Revert "refs.c: off-by-one fix."

This reverts 06bf6ac4248e834a229027908d405f5e42ac96d7 commit.

diff --git a/refs.c b/refs.c
index 7a2c56e..0d63c1f 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -348,11 +348,8 @@ int check_ref_format(const char *ref)
                        if (level < 2)
                                return -1; /* at least of form "heads/blah" */
 
-                       /* Do not allow ref name to end in "HEAD"
-                        * Note that cp is poiting at one past NUL at the end.
-                        * i.e. cp[-1] = NUL.
-                        */
-                       if (5 <= cp - ref && !strcmp(cp - 5, "HEAD"))
+                       /* do not allow ref name to end in "HEAD" */
+                       if (cp - ref > 4 && !strcmp(cp - 4, "HEAD"))
                                return -1;
 
                        return 0;