Btrfs: remove unused argument of btrfs_extend_item()

Argument 'trans' is not used in btrfs_extend_item().

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 40692f6..c944b6e 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1035,7 +1035,7 @@
 		return ret;
 	BUG_ON(ret); /* Corruption */
 
-	btrfs_extend_item(trans, root, path, new_size);
+	btrfs_extend_item(root, path, new_size);
 
 	leaf = path->nodes[0];
 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
@@ -1683,7 +1683,7 @@
 	type = extent_ref_type(parent, owner);
 	size = btrfs_extent_inline_ref_size(type);
 
-	btrfs_extend_item(trans, root, path, size);
+	btrfs_extend_item(root, path, size);
 
 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
 	refs = btrfs_extent_refs(leaf, ei);