[gnome-shell] dash: destroy items's child before tooltip

[Florian Müllner <fmuellner src gnome org>]

commit ff2fbf5ae40561b403b721e932d1bc5492532156
Author: Andrea Azzarone <azzaronea gmail com>
Date:   Fri Nov 16 18:31:56 2018 +0000

    dash: destroy items's child before tooltip
    
    Destroy the DashItemContainer's child from the same handler as the tooltip. This
    will prevent invalid reads when the item is destroyed while its quicklist is
    still open.
    
    Fixes: https://gitlab.gnome.org/GNOME/gnome-shell/issues/781

 js/ui/dash.js | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/js/ui/dash.js b/js/ui/dash.js
index 60d030941..ce970a610 100644
--- a/js/ui/dash.js
+++ b/js/ui/dash.js
@@ -55,6 +55,8 @@ var DashItemContainer = new Lang.Class({
         this.animatingOut = false;
 
         this.connect('destroy', () => {
+            if (this.child != null)
+                this.child.destroy();
             this.label.destroy();
         });
     },