[gnome-shell] dash: Fix show-apps button drop target

[Florian Müllner <fmuellner src gnome org>]

commit 4affa5528af537927877c810bc95e55decd2e1fb
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Mar 5 12:32:15 2015 +0100

    dash: Fix show-apps button drop target
    
    Fallout from commit e69cc20fc7dc1 ...
    
    https://bugzilla.gnome.org/show_bug.cgi?id=745666

 js/ui/dash.js |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/dash.js b/js/ui/dash.js
index 2f48a7a..ba137c7 100644
--- a/js/ui/dash.js
+++ b/js/ui/dash.js
@@ -242,6 +242,8 @@ const ShowAppsIcon = new Lang.Class({
     _init: function() {
         this.parent();
 
+        this._settings = new Gio.Settings({ schema_id: 'org.gnome.shell' });
+
         this.toggleButton = new St.Button({ style_class: 'show-apps',
                                             track_hover: true,
                                             can_focus: true,