From 9ab207faa0f4b5919f477f8c2c33f35a5bf33694 Mon Sep 17 00:00:00 2001
From: cracker0dks <rofl256@gmail.com>
Date: Sun, 2 Jun 2019 17:38:14 +0200
Subject: [PATCH] catch server error when id or obj is not set

---
 server.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/server.js b/server.js
index ae3e37c..33f34f3 100644
--- a/server.js
+++ b/server.js
@@ -122,7 +122,9 @@ io.on('connection', function (socket) {
     var whiteboardId = null;
 
     socket.on('disconnect', function () {
-        delete smallestScreenResolutions[whiteboardId][socket.id];
+        if(smallestScreenResolutions && smallestScreenResolutions[whiteboardId] && socket && socket.id) {
+            delete smallestScreenResolutions[whiteboardId][socket.id];
+        }
         socket.broadcast.emit('refreshUserBadges', null); //Removes old user Badges
         sendSmallestScreenResolution();
     });