[PATCH v2] btrfs: Add missing sctx check in cleanup path

[Hongling Zeng]

Add sctx NULL check in the for loop condition of the sort_clone_roots
cleanup path for consistency with the else branch

Signed-off-by: Hongling Zeng <zenghongling@xxxxxxxxxx>
Suggested-by: David Sterba <dsterba@xxxxxxx>
---
 Change in v2:
 -Uses the same pattern: for (i = 0; sctx && i < clone_sources_to_rollback; i++)
  ,suggested by David
---
 fs/btrfs/send.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 3ae480c7474b..297704edf1b4 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -8251,7 +8251,7 @@ long btrfs_ioctl_send(struct btrfs_root *send_root, const struct btrfs_ioctl_sen
 	}
 
 	if (sort_clone_roots) {
-		for (i = 0; i < sctx->clone_roots_cnt; i++) {
+		for (i = 0; sctx && i < sctx->clone_roots_cnt; i++) {
 			btrfs_root_dec_send_in_progress(
 					sctx->clone_roots[i].root);
 			btrfs_put_root(sctx->clone_roots[i].root);
-- 
2.25.1