btrfs: send: remove redundant assignments to variable ret

The variable ret is being initialized to zero and also later re-assigned
to zero. In both cases the assignment is redundant since the value is
never read after the assignment and hence they can be removed.

Signed-off-by: Colin Ian King <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>

fs/btrfs/send.c

@@ -7253,7 +7253,7 @@ static int changed_cb(struct btrfs_path *left_path,
 		      enum btrfs_compare_tree_result result,
 		      struct send_ctx *sctx)
 {
-	int ret = 0;
+	int ret;
 
 	/*
 	 * We can not hold the commit root semaphore here. This is because in
@@ -7313,7 +7313,6 @@ static int changed_cb(struct btrfs_path *left_path,
 			return 0;
 		}
 		result = BTRFS_COMPARE_TREE_CHANGED;
-		ret = 0;
 	}
 
 	sctx->left_path = left_path;