Merge branch 'maint'

* maint:
  pack-check.c::verify_packfile(): don't run SHA-1 update on huge data
  Fix infinite loop when deleting multiple packed refs.

cache.h

@@ -179,6 +179,7 @@ extern int refresh_cache(unsigned int flags);
 
 struct lock_file {
 	struct lock_file *next;
+	char on_list;
 	char filename[PATH_MAX];
 };
 extern int hold_lock_file_for_update(struct lock_file *, const char *path, int);