git_config(git_default_config);
/* We can't free this memory, it becomes part of a linked list parsed atexit() */
- lock_file = xmalloc(sizeof(struct lock_file));
+ lock_file = xcalloc(1, sizeof(struct lock_file));
newfd = hold_lock_file_for_update(lock_file, get_index_file());
if (newfd < 0)