[gnome-shell] Notification: don't expand the content on a destroyed notification

[Giovanni Campagna <gcampagna src gnome org>]

commit 5413010c6075ec2af766c2cf3e5766ccad3e11fb
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed Jan 15 18:05:45 2014 +0100

    Notification: don't expand the content on a destroyed notification
    
    If the notification is destroyed between an allocate and the redraw,
    the meta_later is invoked on a destroyed object, and fails because
    the clutter calls are invalid at that point.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=722547

 js/ui/messageTray.js |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 6503611..f3806b7 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -1001,6 +1001,9 @@ const Notification = new Lang.Class({
             Meta.later_add(Meta.LaterType.BEFORE_REDRAW,
                            Lang.bind(this,
                                      function() {
+                                         if (this._destroyed)
+                                             return false;
+
                                         if (this._canExpandContent()) {
                                             this._addBannerBody();
                                             this._table.add_style_class_name('multi-line-notification');