From eddf8764dd0f6396af41e9a7fba320adc84d96c7 Mon Sep 17 00:00:00 2001
From: Duarte Henriques <duarte.henriques@gmail.com>
Date: Tue, 11 Sep 2018 11:59:06 +0100
Subject: [PATCH] Only change onbeforeunload when that option is set

---
 src/editor/model/Editor.js | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/editor/model/Editor.js b/src/editor/model/Editor.js
index 2c66604c0..9f5d0f778 100644
--- a/src/editor/model/Editor.js
+++ b/src/editor/model/Editor.js
@@ -137,10 +137,8 @@ module.exports = Backbone.Model.extend({
     const stm = this.get('StorageManager');
     const changes = this.get('changesCount');
 
-    if (this.config.noticeOnUnload && changes) {
-      window.onbeforeunload = e => 1;
-    } else {
-      window.onbeforeunload = null;
+    if (this.config.noticeOnUnload) {
+      window.onbeforeunload = changes ? e => 1 : null;
     }
 
     if (stm.isAutosave() && changes >= stm.getStepsBeforeSave()) {