Update live-view.js

Author: benhatsor

live-view/live-view.js

@@ -617,7 +617,7 @@ if (isMobile) {
     // create a new window with live view URL
     const liveViewWindow = window.open(liveViewURL, '_blank');
 
-    liveViewWindow.addEventListener('beforeunload', () => {
+    liveViewWindow.window.addEventListener('beforeunload', () => {
       console.log('[Live view] Closing window');
     });