[pitivi] previewers: Always set lastUpdate when computing geometry

[Thibault Saunier <tsaunier src gnome org>]

commit a1985aec30fa9265454d5337b617e990a3fb0cc5
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Wed Apr 30 06:13:31 2014 +0200

    previewers: Always set lastUpdate when computing geometry

 pitivi/timeline/previewers.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/timeline/previewers.py b/pitivi/timeline/previewers.py
index e25e158..f494483 100644
--- a/pitivi/timeline/previewers.py
+++ b/pitivi/timeline/previewers.py
@@ -808,7 +808,6 @@ class AudioPreviewer(Clutter.Actor, PreviewGenerator, Zoomable, Loggable):
             self.log('Checking if the waveform for "%s" needs to be redrawn' % self._uri)
             if self.lastUpdate is None or datetime.now() - self.lastUpdate > WAVEFORM_UPDATE_INTERVAL:
                 # Last update was long ago or never.
-                self.lastUpdate = datetime.now()
                 self._compute_geometry()
             else:
                 if self._callback_id:
@@ -817,6 +816,7 @@ class AudioPreviewer(Clutter.Actor, PreviewGenerator, Zoomable, Loggable):
 
     def _compute_geometry(self):
         self.log("Computing the clip's geometry for waveforms")
+        self.lastUpdate = datetime.now()
         width_px = self.nsToPixel(self.bElement.props.duration)
         if width_px <= 0:
             return