[gnome-shell] workspaceThumbnail: Initialize signal handler ids to 0



commit 2c0376c150f781aa53d237223f47e728de1833b2
Author: Jonas Ã…dahl <jadahl gmail com>
Date:   Wed Apr 25 22:03:16 2018 +0200

    workspaceThumbnail: Initialize signal handler ids to 0
    
    They are used in conditions, so initialize them first.

 js/ui/workspaceThumbnail.js | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/js/ui/workspaceThumbnail.js b/js/ui/workspaceThumbnail.js
index 4021e997c..569f43323 100644
--- a/js/ui/workspaceThumbnail.js
+++ b/js/ui/workspaceThumbnail.js
@@ -674,6 +674,11 @@ var ThumbnailsBox = new Lang.Class({
             this._updateSwitcherVisibility.bind(this));
 
         Main.layoutManager.connect('monitors-changed', this._rebuildThumbnails.bind(this));
+
+        this._switchWorkspaceNotifyId = 0;
+        this._nWorkspacesNotifyId = 0;
+        this._syncStackingId = 0;
+        this._workareasChangedId = 0;
     },
 
     _updateSwitcherVisibility() {


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