[gnome-documents] mainWindow: fix a warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit 94904769deed3b3786c679c1de8cad0a9de27cde
Author: Cosimo Cecchi <cosimo endlessm com>
Date:   Wed Jan 8 10:33:35 2014 -0800

    mainWindow: fix a warning
    
    We forgot to clear this._configureId when the timeout is fired, which
    would lead to us trying to remove a source that doesn't exist anymore.

 src/mainWindow.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 224df7a..74c83bc 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -119,6 +119,7 @@ const MainWindow = new Lang.Class({
 
         this._configureId = Mainloop.timeout_add(_CONFIGURE_ID_TIMEOUT, Lang.bind(this,
             function() {
+                this._configureId = 0;
                 this._saveWindowGeometry();
                 return false;
             }));