From 017df40b335a97e447b3821b1acbb3bc7120c180 Mon Sep 17 00:00:00 2001
From: James Muehlner <james.muehlner@guac-dev.org>
Date: Tue, 6 Feb 2018 20:11:30 -0800
Subject: [PATCH] GUACAMOLE-348: Only remove download iframe if it's still
 attached to the DOM.

---
 guacamole/src/main/webapp/app/rest/services/tunnelService.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/guacamole/src/main/webapp/app/rest/services/tunnelService.js b/guacamole/src/main/webapp/app/rest/services/tunnelService.js
index f74088d4b..c6d5ed412 100644
--- a/guacamole/src/main/webapp/app/rest/services/tunnelService.js
+++ b/guacamole/src/main/webapp/app/rest/services/tunnelService.js
@@ -224,7 +224,9 @@ angular.module('rest').factory('tunnelService', ['$injector',
         // ends, in the browser does NOT fire the "load" event for downloads
         stream.onend = function downloadComplete() {
             $window.setTimeout(function cleanupIframe() {
-                document.body.removeChild(iframe);
+                if (iframe.parentElement) {
+                    document.body.removeChild(iframe);
+                }
             }, DOWNLOAD_CLEANUP_WAIT);
         };