[gnome-tweak-tool] no need to dupe a list when a generator will do

[John Stowers <jstowers src gnome org>]

commit 2bfa66e8d8444f33d69ca2a5d1129aed8078e9c9
Author: John Stowers <john stowers gmail com>
Date:   Sun Mar 24 21:41:40 2013 +0100

    no need to dupe a list when a generator will do

 gtweak/tweakmodel.py |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtweak/tweakmodel.py b/gtweak/tweakmodel.py
index 97cce66..8e73307 100644
--- a/gtweak/tweakmodel.py
+++ b/gtweak/tweakmodel.py
@@ -122,11 +122,11 @@ class TweakModel(Gtk.ListStore):
 
     @property
     def tweaks(self):
-        return [t for row in self for t in row[TweakModel.COLUMN_TWEAK].tweaks]
+        return (t for row in self for t in row[TweakModel.COLUMN_TWEAK].tweaks)
 
     @property
     def tweak_groups(self):
-        return [row[TweakModel.COLUMN_TWEAK] for row in self]
+        return (row[TweakModel.COLUMN_TWEAK] for row in self)
 
     def load_tweaks(self):
         if 1:
@@ -178,7 +178,7 @@ class TweakModel(Gtk.ListStore):
         group.set_tweaks(tweak)
       
     def search_matches(self, txt):
-        return [t for t in self.tweaks if t.search_matches(txt)]
+        return (t for t in self.tweaks if t.search_matches(txt))
 
     def get_tweakgroup_iter(self, name):
         return self._tweak_group_iters[name]