btrfs: fix shadow warning on cmp

cmp was declared twice in btrfs_compare_trees resulting in a shadow
warning. This patch renames second internal variable.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 39021bf2df9a..8d0703cc7402 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -5522,18 +5522,18 @@ int btrfs_compare_trees(struct btrfs_root *left_root,
                                         goto out;
                                 advance_right = ADVANCE;
                         } else {
-                                enum btrfs_compare_tree_result cmp;
+                                enum btrfs_compare_tree_result result;
 
                                 WARN_ON(!extent_buffer_uptodate(left_path->nodes[0]));
                                 ret = tree_compare_item(left_root, left_path,
                                                 right_path, tmp_buf);
                                 if (ret)
-                                        cmp = BTRFS_COMPARE_TREE_CHANGED;
+                                        result = BTRFS_COMPARE_TREE_CHANGED;
                                 else
-                                        cmp = BTRFS_COMPARE_TREE_SAME;
+                                        result = BTRFS_COMPARE_TREE_SAME;
                                 ret = changed_cb(left_root, right_root,
                                                  left_path, right_path,
-                                                 &left_key, cmp, ctx);
+                                                 &left_key, result, ctx);
                                 if (ret < 0)
                                         goto out;
                                 advance_left = ADVANCE;