From: Tim Düsterhus <duesterhus@woltlab.com>
Date: Fri, 14 Oct 2016 16:36:55 +0000 (+0200)
Subject: Fix popstate event handler in WCF.ImageViewer
X-Git-Tag: 3.0.0_Beta_3~44
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=67bcb9008ea8e6423b28f68cd285c7bf747454d8;p=GitHub%2FWoltLab%2FWCF.git

Fix popstate event handler in WCF.ImageViewer
---

diff --git a/wcfsetup/install/files/js/WCF.ImageViewer.js b/wcfsetup/install/files/js/WCF.ImageViewer.js
index d97d3da4c1..569d909349 100644
--- a/wcfsetup/install/files/js/WCF.ImageViewer.js
+++ b/wcfsetup/install/files/js/WCF.ImageViewer.js
@@ -318,7 +318,7 @@ $.widget('ui.wcfImageViewer', {
 		this.element.click($.proxy(this.open, this));
 
 		window.addEventListener('popstate', (function(event) {
-			if (event.state.name === 'imageViewer') {
+			if (event.state != null && event.state.name === 'imageViewer') {
 				if (event.state.container === this._eventNamespace) {
 					this.open(event);
 					this.showImage(event.state.image);