[gnome-shell/wip/fmuellner/fix-obj-access-warning] animation: Disable spinner animations when actor is destroyed

[Florian Müllner <fmuellner src gnome org>]

commit edbb20433293f48beb4ff6beb8c1d0dd1bf035f1
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jan 23 23:40:18 2019 +0100

    animation: Disable spinner animations when actor is destroyed
    
    There's nothing to animate anymore, just a source for warnings when
    trying to access a destroyed object.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/362

 js/ui/animation.js | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/js/ui/animation.js b/js/ui/animation.js
index 5b4a10c08..65fff2cd7 100644
--- a/js/ui/animation.js
+++ b/js/ui/animation.js
@@ -104,6 +104,11 @@ var Spinner = new Lang.Class({
         this._animate = animate;
     },
 
+    _onDestroy() {
+        this._animate = false;
+        this.parent();
+    },
+
     play() {
         Tweener.removeTweens(this.actor);