gitweb: prepare for repositories with packed refs.

diff --git a/builtin-update-ref.c b/builtin-update-ref.c
index 5bd71825fdc48392952faf170efe98c072c7e482..90a3da53ad003a82781e6d4acfc7815c8f15f24f 100644 (file)
--- a/builtin-update-ref.c
+++ b/builtin-update-ref.c
@@ -44,7 +44,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
 
        if (get_sha1(value, sha1))
                die("%s: not a valid SHA1", value);
-       memset(oldsha1, 0, 20);
+       hashclr(oldsha1);
        if (oldval && get_sha1(oldval, oldsha1))
                die("%s: not a valid old SHA1", oldval);