[PATCH] Remove complex code

[Vincent Legoll <vincent legoll gmail com>]

Pylint warned about the 'b' variable being unused.

I think the patch is a noop, modulo potential side effects that I couldn't see.
It certainly looks much simpler, and better express the intent, if I'm
not mistaken.

-- 
Vincent Legoll

Index: filediff.py
===================================================================
--- filediff.py	(révision 1182)
+++ filediff.py	(copie de travail)
@@ -934,8 +934,7 @@
         self.set_files(files)
 
     def on_refresh_activate(self, *extra):
-        files = [None for b in self.bufferdata[:self.num_panes] ]
-        self.set_files(files)
+        self.set_files([None] * self.num_panes)
 
     def queue_draw(self, junk=None):
         for i in range(self.num_panes-1):