[meld] Ensure locations are a list not a tuple before changing (bgo#699062)

[Kai Willadsen <kaiw src gnome org>]

commit 54bfe93a7802dccc4c4239272525cb6d402d6891
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sun Apr 28 06:21:48 2013 +1000

    Ensure locations are a list not a tuple before changing (bgo#699062)

 meld/dirdiff.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/meld/dirdiff.py b/meld/dirdiff.py
index 8755b5d..6e30b15 100644
--- a/meld/dirdiff.py
+++ b/meld/dirdiff.py
@@ -586,6 +586,7 @@ class DirDiff(melddoc.MeldDoc, gnomeglade.Component):
         # This is difficult to trigger, and to test. Most of the time here we
         # will actually have had UTF-8 from GTK, which has been unicode-ed by
         # the time we get this far. This is a fallback, and may be wrong!
+        locations = list(locations)
         for i, l in enumerate(locations):
             if not isinstance(l, unicode):
                 locations[i] = l.decode(sys.getfilesystemencoding())