hide the video UI if the call fails

Author: Adam Bavosa

example/app.js

@@ -81,16 +81,16 @@ messageInput.addEventListener('keydown', (event) => {
 // Send a chat message when the submit button is clicked
 submit.addEventListener('click', sendMessage);
 
-// Register a disconnect event handler when the close video button is clicked
-closeVideoButton.addEventListener('click', closeVideoEventHandler);
-
 const closeVideoEventHandler = (event) => {
     videoModal.classList.add(hide);
     chatInterface.classList.remove(hide);
     clearTimeout(noVideoTimeout);
     webRtcPhone.disconnect(); // disconnects the current phone call
 }
 
+// Register a disconnect event handler when the close video button is clicked
+closeVideoButton.addEventListener('click', closeVideoEventHandler);
+
 const initWebRtcApp = () => {
     // WebRTC phone object event for when the remote peer's video becomes available.
     const onPeerStream = (webRTCTrackEvent) => {