register_ref(): rewrite to take an object_id argument

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

bisect.c

@@ -400,27 +400,24 @@ struct commit_list *find_bisection(struct commit_list *list,
 	return best;
 }
 
-static int register_ref(const char *refname, const unsigned char *sha1,
+static int register_ref(const char *refname, const struct object_id *oid,
 			int flags, void *cb_data)
 {
 	if (!strcmp(refname, "bad")) {
 		current_bad_oid = xmalloc(sizeof(*current_bad_oid));
-		hashcpy(current_bad_oid->hash, sha1);
+		oidcpy(current_bad_oid, oid);
 	} else if (starts_with(refname, "good-")) {
-		sha1_array_append(&good_revs, sha1);
+		sha1_array_append(&good_revs, oid->hash);
 	} else if (starts_with(refname, "skip-")) {
-		sha1_array_append(&skipped_revs, sha1);
+		sha1_array_append(&skipped_revs, oid->hash);
 	}
 
 	return 0;
 }
 
 static int read_bisect_refs(void)
 {
-	struct each_ref_fn_sha1_adapter wrapped_register_ref =
-		{register_ref, NULL};
-
-	return for_each_ref_in("refs/bisect/", each_ref_fn_adapter, &wrapped_register_ref);
+	return for_each_ref_in("refs/bisect/", register_ref, NULL);
 }
 
 static void read_bisect_paths(struct argv_array *array)