[PATCH 3/3] read_packed_refs: use skip_prefix instead of static array

[Jeff King <peff@peff.net>]

We want to recognize the packed-refs header and skip to the
"traits" part of the line. We currently do it by feeding
sizeof() a static const array to strncmp. However, it's a
bit simpler to just skip_prefix, which expresses the
intention more directly, and without remembering to account
for the NUL-terminator in each sizeof() call.

Signed-off-by: Jeff King <peff@peff.net>
---
 refs.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/refs.c b/refs.c
index 10f8247..c71553f 100644
--- a/refs.c
+++ b/refs.c
@@ -1135,10 +1135,9 @@ static void read_packed_refs(FILE *f, struct ref_dir *dir)
 	while (strbuf_getwholeline(&line, f, '\n') != EOF) {
 		unsigned char sha1[20];
 		const char *refname;
-		static const char header[] = "# pack-refs with:";
+		const char *traits;
 
-		if (!strncmp(line.buf, header, sizeof(header)-1)) {
-			const char *traits = line.buf + sizeof(header) - 1;
+		if (skip_prefix(line.buf, "# pack-refs with:", &traits)) {
 			if (strstr(traits, " fully-peeled "))
 				peeled = PEELED_FULLY;
 			else if (strstr(traits, " peeled "))
-- 
2.2.0.454.g7eca6b7