From: Adel Gadllah <adel.gadllah@gmail.com>
Date: Wed, 9 Feb 2011 19:42:44 +0000 (+0100)
Subject: appSwitcher: Don't create thumbnails for destroyed windows
X-Git-Tag: archive/raspbian/50.5-1+rpi1~1^2~1013^2^2~9075
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/%22/%22http:/www.example.com/cgi/%22?a=commitdiff_plain;h=a52ec8f286afd8b620b795cb62f7b9c37e000c7e;p=gnome-shell.git

appSwitcher: Don't create thumbnails for destroyed windows
---

diff --git a/js/ui/altTab.js b/js/ui/altTab.js
index 46c2a09bf..28d2b911f 100644
--- a/js/ui/altTab.js
+++ b/js/ui/altTab.js
@@ -1081,6 +1081,9 @@ ThumbnailList.prototype = {
 
         for (let i = 0; i < this._thumbnailBins.length; i++) {
             let mutterWindow = this._windows[i].get_compositor_private();
+            if (!mutterWindow)
+                continue;
+
             let windowTexture = mutterWindow.get_texture ();
             let [width, height] = windowTexture.get_size();
             let scale = Math.min(1.0, THUMBNAIL_DEFAULT_SIZE / width, availHeight / height);