[gnome-builder] clone: don't transition if task was canceled

[Christian Hergert <chergert src gnome org>]

commit 01d5aad6d8523dc1bed3cee3e1a39003b8c97391
Author: Christian Hergert <chergert redhat com>
Date:   Sun Mar 12 21:01:25 2017 -0700

    clone: don't transition if task was canceled
    
    If the task got canceled while we were cloning, then we don't want to
    transition to the workbench. Instead return from the task worker.

 plugins/git/ide-git-clone-widget.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/plugins/git/ide-git-clone-widget.c b/plugins/git/ide-git-clone-widget.c
index 12bbc3c..a5cd603 100644
--- a/plugins/git/ide-git-clone-widget.c
+++ b/plugins/git/ide-git-clone-widget.c
@@ -372,6 +372,9 @@ ide_git_clone_widget_worker (GTask        *task,
       return;
     }
 
+  if (g_task_return_error_if_cancelled (task))
+    return;
+
   req->project_file = ggit_repository_get_workdir (repository);
   g_timeout_add (0, finish_animation_in_idle, g_object_ref (task));