[PATCH 15/31] builtin/pull: make hash-size independent

["brian m. carlson" <sandals@crustytoothpaste.net>]

Instead of using get_oid_hex and GIT_SHA1_HEXSZ, use parse_oid_hex to
avoid the need for a constant and simplify the code.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/pull.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/builtin/pull.c b/builtin/pull.c
index 701d1473dc..52d93c1e3b 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -365,9 +365,10 @@ static void get_merge_heads(struct oid_array *merge_heads)
 
 	fp = xfopen(filename, "r");
 	while (strbuf_getline_lf(&sb, fp) != EOF) {
-		if (get_oid_hex(sb.buf, &oid))
+		const char *p;
+		if (parse_oid_hex(sb.buf, &oid, &p))
 			continue;  /* invalid line: does not start with SHA1 */
-		if (starts_with(sb.buf + GIT_SHA1_HEXSZ, "\tnot-for-merge\t"))
+		if (starts_with(p, "\tnot-for-merge\t"))
 			continue;  /* ref is not-for-merge */
 		oid_array_append(merge_heads, &oid);
 	}