[pitivi] timeline: Fix call to be done once

[Alexandru Băluț <alexbalut src gnome org>]

commit 810942b049dc3749dff70ec496450fd6fd8d4342
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Tue Aug 9 00:13:56 2016 +0200

    timeline: Fix call to be done once
    
    Reviewed-by: Thibault Saunier <tsaunier gnome org>
    Differential Revision: https://phabricator.freedesktop.org/D1268

 pitivi/utils/timeline.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/utils/timeline.py b/pitivi/utils/timeline.py
index cb3076f..9ab7c78 100644
--- a/pitivi/utils/timeline.py
+++ b/pitivi/utils/timeline.py
@@ -122,9 +122,9 @@ class Selection(GObject.Object, Loggable):
 
         for obj in old_selection - self.selected:
             obj.selected.selected = False
+            if obj.ui:
+                ui.unset_children_state_recurse(obj.ui, Gtk.StateFlags.SELECTED)
             for element in obj.get_children(False):
-                if obj.ui:
-                    ui.unset_children_state_recurse(obj.ui, Gtk.StateFlags.SELECTED)
                 if not isinstance(element, GES.BaseEffect) and not isinstance(element, GES.TextOverlay):
                     element.selected.selected = False