Btrfs: update the delayed inode code to use the btrfs_ino helper.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/dir-item.c b/fs/btrfs/dir-item.c
index f53fb38..e757202 100644
--- a/fs/btrfs/dir-item.c
+++ b/fs/btrfs/dir-item.c
@@ -138,7 +138,7 @@
 	struct btrfs_disk_key disk_key;
 	u32 data_size;
 
-	key.objectid = dir->i_ino;
+	key.objectid = btrfs_ino(dir);
 	btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
 	key.offset = btrfs_name_hash(name, name_len);