From b563e2592a7f26ac006fb724d7e8c6a7d5290cf9 Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Thu, 14 Jul 2016 19:45:40 +0200
Subject: [PATCH] Fix check in Clipboard.js for parent's class

`Document` has no property `classList`.
---
 wcfsetup/install/files/js/WoltLab/WCF/Controller/Clipboard.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/js/WoltLab/WCF/Controller/Clipboard.js b/wcfsetup/install/files/js/WoltLab/WCF/Controller/Clipboard.js
index 41d2073727..c0e8cbde9d 100644
--- a/wcfsetup/install/files/js/WoltLab/WCF/Controller/Clipboard.js
+++ b/wcfsetup/install/files/js/WoltLab/WCF/Controller/Clipboard.js
@@ -540,7 +540,7 @@ define(
 				
 				var parent = data.markAll;
 				while (parent = parent.parentNode) {
-					if (parent.classList.contains('columnMark')) {
+					if (parent instanceof Element && parent.classList.contains('columnMark')) {
 						parent = parent.parentNode;
 						break;
 					}
-- 
2.20.1