[gnome-shell] messageTray: Add missing linebreak

[Florian Müllner <fmuellner src gnome org>]

commit 4ad2523877dface9b1835d35ee291e09736cdd0a
Author: Florian Müllner <fmuellner gnome org>
Date:   Mon Aug 19 21:08:38 2019 +0200

    messageTray: Add missing linebreak
    
    Methods should be separated by an empty lines, even when short.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/710

 js/ui/messageTray.js | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/js/ui/messageTray.js b/js/ui/messageTray.js
index 6a65d5febf..801b28818b 100644
--- a/js/ui/messageTray.js
+++ b/js/ui/messageTray.js
@@ -153,6 +153,7 @@ var NotificationPolicy = class NotificationPolicy {
     // Do nothing for the default policy. These methods are only useful for the
     // GSettings policy.
     store() { }
+
     destroy() { }
 
     get enable() {