Fix btrfs_next_leaf to check for new items after dropping locks

		return ret;

	nritems = btrfs_header_nritems(path->nodes[0]);

	/*

	 * by releasing the path above we dropped all our locks.  A balance

	 * could have added more items next to the key that used to be

	 * at the very end of the block.  So, check again here and

	 * advance the path if there are now more items available.

	 */

	if (nritems > 0 && path->slots[0] < nritems - 1) {

		path->slots[0]++;

		goto done;

	}