[gnome-shell] messageTray: Reword a boolean condition

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

commit 9d3a109946916b151ee59ac0d46ce2eef3ec32cf
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Dec 4 11:22:48 2013 -0500

    messageTray: Reword a boolean condition
    
    Just so it's a bit easier to understand...

 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 e93a89c..aa93640 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -2382,7 +2382,7 @@ const MessageTray = new Lang.Class({
         } else if (this._notificationState == State.SHOWN) {
             let expired = (this._userActiveWhileNotificationShown &&
                            this._notificationTimeoutId == 0 &&
-                           !(this._notification.urgency == Urgency.CRITICAL) &&
+                           this._notification.urgency != Urgency.CRITICAL &&
                            !this._notification.focused &&
                            !this._pointerInNotification);
             let mustClose = (this._notificationRemoved || !hasNotifications || expired || 
this._traySummoned);