Function close_lock_file_gently

lockfile.h:287–290

* If the lockfile is still open, close it (and the file pointer if it * has been opened using `fdopen_lock_file()`) without renaming the * lockfile over the file being locked. Return 0 upon success. On * failure to `close(2)`, return a negative value (the lockfile is not * rolled back). Usually `commit_lock_file()`, `commit_lock_file_to()`, * or `rollback_lock_file()` should eventually be cal

 * or `rollback_lock_file()` should eventually be called.
 */
static inline int close_lock_file_gently(struct lock_file *lk)
{
	return close_tempfile_gently(lk->tempfile);
}

/*
 * Re-open a lockfile that has been closed using `close_lock_file_gently()`