[meld] filediff: If lacking any encoding, just save as UTF-8

[Kai Willadsen <kaiw src gnome org>]

commit d408a6960a27f49a1c2416bb0c4cfa4b4fb2599b
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Mon Oct 26 07:17:55 2015 +1000

    filediff: If lacking any encoding, just save as UTF-8
    
    This will happen if e.g., there was an error loading the file from disk.

 meld/filediff.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meld/filediff.py b/meld/filediff.py
index 59ac13f..f695509 100644
--- a/meld/filediff.py
+++ b/meld/filediff.py
@@ -1588,7 +1588,7 @@ class FileDiff(melddoc.MeldDoc, gnomeglade.Component):
                             text = text.replace('\n', k)
                         break
 
-        encoding = bufdata.encoding
+        encoding = bufdata.encoding or 'utf-8'
         while isinstance(text, unicode):
             try:
                 text = text.encode(encoding)