[gnome-shell] ScreenShield: fix fallout from 8cb3884

[Giovanni Campagna <gcampagna src gnome org>]

commit 9ab22fe5519149515571128448ca0cb27805ccb6
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Thu Jan 31 13:33:31 2013 +0100

    ScreenShield: fix fallout from 8cb3884
    
    We must remove music notifications before we're destroyed, otherwise
    they get destroyed with us.
    Also, integrate a review comment I previously forgot.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=685926

 js/ui/screenShield.js |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/screenShield.js b/js/ui/screenShield.js
index 0367f60..73bf137 100644
--- a/js/ui/screenShield.js
+++ b/js/ui/screenShield.js
@@ -218,9 +218,11 @@ const NotificationsBox = new Lang.Class({
                 continue;
 
             let body = '';
-            if (n.bannerBodyText)
+            if (n.bannerBodyText) {
                 body = n.bannerBodyMarkup ? n.bannerBodyText :
                 GLib.markup_escape_text(n.bannerBodyMarkup, -1);
+            }
+
             let label = new St.Label({ style_class: 'screen-shield-notification-count-text' });
             label.clutter_text.set_markup('<b>' + n.title + '</b> ' + body);
             textBox.add(label);
@@ -356,6 +358,11 @@ const NotificationsBox = new Lang.Class({
         obj.sourceBox.destroy();
         obj.sourceBox = obj.titleLabel = obj.countLabel = null;
 
+        if (obj.musicNotification) {
+            this._musicBin.child = null;
+            obj.musicNotification = null;
+        }
+
         source.disconnect(obj.sourceDestroyId);
         source.disconnect(obj.sourceCountChangedId);
         source.disconnect(obj.sourceTitleChangedId);