Use starts_with() for C strings instead of memcmp()rs/more-starts-with

Convert three cases of checking for a constant prefix using memcmp() to
starts_with().  This way there is no need for magic string length
constants and we avoid running over the end of the string should it be
shorter than the prefix.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/remote.c b/remote.c
index eea2c8de45..0f6ef36b7d 100644
--- a/remote.c
+++ b/remote.c
@@ -1194,7 +1194,7 @@ static int match_explicit(struct ref *src, struct ref *dst,
 	case 1:
 		break;
 	case 0:
-		if (!memcmp(dst_value, "refs/", 5))
+		if (starts_with(dst_value, "refs/"))
 			matched_dst = make_linked_ref(dst_value, dst_tail);
 		else if (is_null_sha1(matched_src->new_sha1))
 			error("unable to delete '%s': remote ref does not exist",