As of commit c624b015bf14fe01f1e6452a36e63b3ea1ae4998, the stream job
only freezes the chain until the overlay of the base node.  The error
path must consider this.

Fixes: c624b015bf14fe01f1e6452a36e63b3ea1ae4998
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190703172813.6868-3-mreitz@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 block/stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/stream.c b/block/stream.c
index cd5e2ba9b0..b27e61625d 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -284,5 +284,5 @@ fail:
     if (bs_read_only) {
         bdrv_reopen_set_read_only(bs, true, NULL);
     }
-    bdrv_unfreeze_backing_chain(bs, base);
+    bdrv_unfreeze_backing_chain(bs, bottom);
 }
-- 
2.21.0