From 15fc30d1d966b620bca3c99d01341765c05aca83 Mon Sep 17 00:00:00 2001
From: Toby Zerner <toby.zerner@gmail.com>
Date: Fri, 26 Jun 2015 11:57:52 +0930
Subject: [PATCH] Fix unwanted onbeforeunload message

---
 framework/core/js/forum/src/components/composer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/framework/core/js/forum/src/components/composer.js b/framework/core/js/forum/src/components/composer.js
index 84729ab3b..ac32aa1db 100644
--- a/framework/core/js/forum/src/components/composer.js
+++ b/framework/core/js/forum/src/components/composer.js
@@ -72,7 +72,7 @@ class Composer extends Component {
       .on('mouseup', this.handlers.onmouseup = this.onmouseup.bind(this));
 
     window.onbeforeunload = e => {
-      return this.component && this.component.preventExit();
+      return (this.component && this.component.preventExit()) || null;
     };
   }