Close connection properly for ff warning

Author: remdex

nodejshelper/design/nodejshelpertheme/js/customjs-admin.js

@@ -108,4 +108,8 @@ var channelList = [];
         }
     });
 
+    $(window).on('beforeunload', function () {
+        socket.destroy();
+    });
+
 })();

nodejshelper/design/nodejshelpertheme/js/customjs-widget.js

@@ -82,6 +82,9 @@
         };
     });
 
+    $(window).on('beforeunload', function () {
+        socket.destroy();
+    });
 
 
 })();