[pitivi] timelime: Guarantee clip name is reusable when readding a clip to timeline

[Thibault Saunier <tsaunier src gnome org>]

commit 8d235a15347875e24888b39c5d352813b65622d1
Author: Thibault Saunier <tsaunier gnome org>
Date:   Sun Nov 16 20:05:50 2014 +0100

    timelime: Guarantee clip name is reusable when readding a clip to timeline
    
    Otherwize scenarios will be unusable

 pitivi/undo/timeline.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/undo/timeline.py b/pitivi/undo/timeline.py
index 722affb..410bee6 100644
--- a/pitivi/undo/timeline.py
+++ b/pitivi/undo/timeline.py
@@ -306,6 +306,7 @@ class ClipAdded(UndoableAction):
         self.clip = clip
 
     def do(self):
+        self.clip.set_name(None)
         self.layer.add_clip(self.clip)
         self.layer.get_timeline().commit()
         self._done()
@@ -344,6 +345,7 @@ class ClipRemoved(UndoableAction):
         self._done()
 
     def undo(self):
+        self.clip.set_name(None)
         self.layer.add_clip(self.clip)
         self.layer.get_timeline().commit()
         self._undone()