[pitivi] prefs: Switch to new style class

[Jean-François Fortin Tam <jfft src gnome org>]

commit b9b566edb1439e79ec7036fe6f15d9d46b5a3f7c
Author: Mathieu Duponchelle <mduponchelle1 gmail com>
Date:   Thu Dec 26 15:58:29 2013 +0100

    prefs: Switch to new style class

 pitivi/dialogs/prefs.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/dialogs/prefs.py b/pitivi/dialogs/prefs.py
index 7207b9e..43988f0 100644
--- a/pitivi/dialogs/prefs.py
+++ b/pitivi/dialogs/prefs.py
@@ -46,7 +46,7 @@ GlobalSettings.addConfigOption('prefsDialogHeight',
     default=400)
 
 
-class PreferencesDialog():
+class PreferencesDialog(object):
 
     prefs = {}
     original_values = {}