Merge branch 'maint-1.5.1' into maint

* maint-1.5.1:
  fix memory leak in parse_object when check_sha1_signature fails
  name-rev: tolerate clock skew in committer dates

object.c

@@ -176,6 +176,7 @@ struct object *parse_object(const unsigned char *sha1)
 	if (buffer) {
 		struct object *obj;
 		if (check_sha1_signature(sha1, buffer, size, typename(type)) < 0) {
+			free(buffer);
 			error("sha1 mismatch %s\n", sha1_to_hex(sha1));
 			return NULL;
 		}