[pitivi] clipproperties: Disconnect from the timeline if one has been set already

[Thibault Saunier <tsaunier src gnome org>]

commit 2564a7567156bff79a4b65a9c7411e53ae46caea
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Wed Jul 30 00:41:57 2014 +0200

    clipproperties: Disconnect from the timeline if one has been set already

 pitivi/clipproperties.py |   12 ++++--------
 1 files changed, 4 insertions(+), 8 deletions(-)
---
diff --git a/pitivi/clipproperties.py b/pitivi/clipproperties.py
index 15340ce..8d81036 100644
--- a/pitivi/clipproperties.py
+++ b/pitivi/clipproperties.py
@@ -259,16 +259,12 @@ class EffectProperties(Gtk.Expander, Loggable):
         return self._timeline
 
     def _setTimeline(self, timeline):
+        if self.connected:
+            self._timeline.selection.disconnect_by_func(self._selectionChangedCb)
+        self._timeline = timeline
         if timeline:
-            self._timeline = timeline
             self._timeline.selection.connect("selection-changed", self._selectionChangedCb)
-            self.connected = True
-        else:
-            if self.connected:
-                self._timeline.selection.disconnect_by_func(self._selectionChangedCb)
-
-            self.connected = False
-            self._timeline = None
+        self.connected = bool(timeline)
 
     timeline = property(_getTimeline, _setTimeline)