[pitivi] elements: Allow the drag source to keep the dragged effect

[Alexandru Băluț <alexbalut src gnome org>]

commit e705a46abc788d999e45c81c71c284f905643dce
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Oct 10 23:34:12 2016 +0200

    elements: Allow the drag source to keep the dragged effect
    
    The del=True argument of drag_finish was forcing the treeview holding
    the list of effects to remove the dragged effect, even though it
    specifies only Gdk.DragAction.COPY in the
    Gtk.TreeView.enable_model_drag_source call.
    
    Fixes https://phabricator.freedesktop.org/T7582
    
    Reviewed-by: Thibault Saunier <tsaunier gnome org>
    Differential Revision: https://phabricator.freedesktop.org/D1369

 pitivi/timeline/elements.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 140822b..dd6ddc7 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -925,7 +925,7 @@ class Clip(Gtk.EventBox, Zoomable, Loggable):
             self.timeline.cleanDropData()
             success = True
 
-        Gtk.drag_finish(context, success, True, timestamp)
+        Gtk.drag_finish(context, success, False, timestamp)
 
         return success