[totem] opensubtitles: Fix downloading subtitles with newer Python

[Bastien Nocera <hadess src gnome org>]

commit c76e276b415c458e38966d3ec58cd750452c9b15
Author: Bastien Nocera <hadess hadess net>
Date:   Sun Mar 8 23:01:04 2015 +0100

    opensubtitles: Fix downloading subtitles with newer Python
    
    Fix error:
    UnboundLocalError: local variable 'result' referenced before assignment
    by initialising result to None.

 src/plugins/opensubtitles/opensubtitles.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/opensubtitles/opensubtitles.py b/src/plugins/opensubtitles/opensubtitles.py
index d23171f..b9cfac4 100644
--- a/src/plugins/opensubtitles/opensubtitles.py
+++ b/src/plugins/opensubtitles/opensubtitles.py
@@ -344,6 +344,7 @@ class OpenSubtitlesModel (object):
         (log_in_success, log_in_message) = self._log_in ()
 
         if log_in_success:
+            result = None
             try:
                 result = self._server.DownloadSubtitles (self._token,
                                                          [subtitle_id])