From 1e80edb43c442d5d2f3ff0e86d4afc806ad8f972 Mon Sep 17 00:00:00 2001
From: David Baker <dave@matrix.org>
Date: Thu, 13 Jul 2017 11:30:25 +0100
Subject: [PATCH] Prevent exception on page unload

Null check when saving sent history
---
 src/components/views/rooms/MessageComposer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/views/rooms/MessageComposer.js b/src/components/views/rooms/MessageComposer.js
index 6993fd8f7d..d9bd8d2892 100644
--- a/src/components/views/rooms/MessageComposer.js
+++ b/src/components/views/rooms/MessageComposer.js
@@ -74,7 +74,7 @@ export default class MessageComposer extends React.Component {
     }
 
     onPageUnload(event) {
-        if (this.messageComposerInput) {
+        if (this.messageComposerInput && this.messageComposerInput.sentHistory) {
             this.messageComposerInput.sentHistory.saveLastTextEntry();
         }
     }