[pitivi] Audio previewer : initialize the list with an int multiplier.

[Thibault Saunier <tsaunier src gnome org>]

commit 0a303d6a2641288a59a7fef05b7ac8324b2364fa
Author: Mathieu Duponchelle <mathieu duponchelle opencreed com>
Date:   Tue Apr 1 19:44:04 2014 +0200

    Audio previewer : initialize the list with an int multiplier.

 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 b0241f7..525edae 100644
--- a/pitivi/timeline/previewers.py
+++ b/pitivi/timeline/previewers.py
@@ -869,7 +869,7 @@ class AudioPreviewer(Clutter.Actor, PreviewGenerator, Zoomable, Loggable):
                 if self.peaks is None:
                     self.peaks = []
                     for channel in p:
-                        self.peaks.append([0] * self.nSamples)
+                        self.peaks.append([0] * int(self.nSamples))
 
                 pos = int(st / 10000000)
                 if pos >= len(self.peaks[0]):