[pitivi] filelisterrordialog: Make _addFileExpander a private static method.

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

commit cb2c48956e99366e7fde08f1c0a65e02224b799b
Author: Mathieu Duponchelle <mduponchelle1 gmail com>
Date:   Thu Dec 26 15:45:38 2013 +0100

    filelisterrordialog: Make _addFileExpander a private static method.

 pitivi/dialogs/filelisterrordialog.py |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/dialogs/filelisterrordialog.py b/pitivi/dialogs/filelisterrordialog.py
index ca529c8..f1a2f49 100644
--- a/pitivi/dialogs/filelisterrordialog.py
+++ b/pitivi/dialogs/filelisterrordialog.py
@@ -61,13 +61,14 @@ class FileListErrorDialog(Signallable, Loggable):
         discovered
         """
         self.debug("Uri: %s, reason: %s, extra: %s", uri, reason, extra)
-        exp = self._createFileExpander(uri, reason, extra)
+        exp = self.__createFileExpander(uri, reason, extra)
         self.errorvbox.pack_start(exp, False, False, 0)
         if len(self.errorvbox.get_children()) < 3:
             exp.set_expanded(True)  # Let's save the user some clicks
         exp.show_all()
 
-    def _createFileExpander(self, uri, reason, extra=None):
+    @staticmethod
+    def __createFileExpander(uri, reason, extra=None):
         if uri:
             if uri.startswith("file://"):
                 uri = uri[7:]