[libdazzle] file-transfer: fix progress callbacks

[Christian Hergert <chergert src gnome org>]

commit 98f71b572fdf21ae735b3f3798dc7e27bf054efb
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jan 5 16:35:13 2019 -0800

    file-transfer: fix progress callbacks

 src/files/dzl-file-transfer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/files/dzl-file-transfer.c b/src/files/dzl-file-transfer.c
index 82cc0ec..bd04255 100644
--- a/src/files/dzl-file-transfer.c
+++ b/src/files/dzl-file-transfer.c
@@ -714,7 +714,7 @@ dzl_file_transfer_execute_async (DzlFileTransfer     *self,
   g_return_if_fail (DZL_IS_FILE_TRANSFER (self));
   g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
 
-  task = g_task_new (self, cancellable, NULL, NULL);
+  task = g_task_new (self, cancellable, callback, user_data);
   g_task_set_source_tag (task, dzl_file_transfer_execute);
 
   if (priv->executed)