[gnome-shell] messageTray: Don't animate the desktop clone for a failed tray grab

[Jasper St. Pierre <jstpierre src gnome org>]

commit 7d6c85be42e34e01d85d3e1cc644ec32e43522da
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Tue Oct 2 20:24:56 2012 -0300

    messageTray: Don't animate the desktop clone for a failed tray grab
    
    If we fail to grab for the message tray, we shouldn't be animating
    the desktop clone. This is a regression from commit fe124e6.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=685342

 js/ui/messageTray.js |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 9baaaea..8b27d3d 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2028,7 +2028,7 @@ const MessageTray = new Lang.Class({
         let trayShouldBeVisible = (this._summaryState == State.SHOWING ||
                                    this._summaryState == State.SHOWN);
         if (!trayIsVisible && trayShouldBeVisible)
-            this._showTray();
+            trayShouldBeVisible = this._showTray();
         else if (trayIsVisible && !trayShouldBeVisible)
             this._hideTray();
 
@@ -2078,7 +2078,7 @@ const MessageTray = new Lang.Class({
                                      modal: modal,
                                      onUngrab: Lang.bind(this, this._escapeTray) })) {
             this._traySummoned = false;
-            return;
+            return false;
         }
 
         this._tween(this.actor, '_trayState', State.SHOWN,
@@ -2090,6 +2090,8 @@ const MessageTray = new Lang.Class({
         if (this._overviewVisible) {
             this._lightbox.show();
         }
+
+        return true;
     },
 
     _showDesktopClone: function() {