[gnome-shell] messageTray: Fix a regression from 1b13509

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

commit b5c85eaecae44412e22aeaa197f9ecc37bfca873
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Apr 22 18:42:34 2013 -0400

    messageTray: Fix a regression from 1b13509
    
    It seems this rename somehow got lost in a rebase.

 js/ui/messageTray.js |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 3786928..70ff6d2 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2208,7 +2208,7 @@ const MessageTray = new Lang.Class({
         let notificationExpired = this._notificationTimeoutId == 0 &&
                                   !(this._notification && this._notification.urgency == Urgency.CRITICAL) &&
                                   !(this._notification && this._notification.focused) &&
-                                  !this._pointerInTray;
+                                  !this._pointerInNotification;
         let notificationLockedOut = !Main.sessionMode.hasNotifications && this._notification;
         let notificationMustClose = this._notificationRemoved || notificationLockedOut || 
(notificationExpired && this._userActiveWhileNotificationShown) || this._notificationClosed;
         let canShowNotification = notificationsPending && this._trayState == State.HIDDEN;