[pitivi/gtktimeline] Fix using images

[Thibault Saunier <tsaunier src gnome org>]

commit 676b195950249d8125320fc50308ac9ca11e2e08
Author: Thibault Saunier <tsaunier gnome org>
Date:   Tue May 19 14:17:36 2015 +0200

    Fix using images

 pitivi/timeline/timeline.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/timeline/timeline.py b/pitivi/timeline/timeline.py
index 7cdd46b..f5d7acf 100644
--- a/pitivi/timeline/timeline.py
+++ b/pitivi/timeline/timeline.py
@@ -636,7 +636,7 @@ class Timeline(Gtk.EventBox, timelineUtils.Zoomable, Loggable):
                     break
 
                 if asset.is_image():
-                    clip_duration = self._settings.imageClipLength * \
+                    clip_duration = self.app.settings.imageClipLength * \
                         Gst.SECOND / 1000.0
                 else:
                     clip_duration = asset.get_duration()
@@ -1030,7 +1030,7 @@ class TimelineContainer(Gtk.Grid, Zoomable, Loggable):
             if isinstance(asset, GES.TitleClip):
                 clip_duration = asset.get_duration()
             elif asset.is_image():
-                clip_duration = self._settings.imageClipLength * \
+                clip_duration = self.app.settings.imageClipLength * \
                     Gst.SECOND / 1000.0
             else:
                 clip_duration = asset.get_duration()