[gedit] Prevent warning on closing gedit

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 90324d89d216b72e263fe068e85ff02c90632f47
Author: Jesse van den Kieboom <jesse icecrew nl>
Date:   Fri May 22 23:29:54 2009 +0200

    Prevent warning on closing gedit
---
 plugins/snippets/snippets/WindowHelper.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/plugins/snippets/snippets/WindowHelper.py b/plugins/snippets/snippets/WindowHelper.py
index dcb38ec..b07188e 100644
--- a/plugins/snippets/snippets/WindowHelper.py
+++ b/plugins/snippets/snippets/WindowHelper.py
@@ -99,6 +99,9 @@ class WindowHelper:
                 return hasattr(view, '_snippet_controller') and view._snippet_controller
 
         def update_language(self):
+                if not self.window:
+                        return
+
                 if self.current_language:
                         accel_group = Library().get_accel_group( \
                                         self.current_language)