Properly delete the bot on disconnect

app/server/bot/events/end.js

@@ -2,7 +2,7 @@ module.exports = function(socket) {
 
   socket.mcbot.on('end', function() {
     socket.emit('bot:disconnect');
-    socket.mcbot = null;
+    delete socket.mcbot;
   });
 
 };

app/server/sockets/events/connection.js

@@ -24,7 +24,8 @@ module.exports = function(socket) {
     socket.mcbot.on('error', function(error) {
       if (error.toString() === 'Error: write after end') return;
       socket.emit('buffer:error', error);
-      socket.mcbot = null;
+      if (socket.mcbot.entity) socket.mcbot.end();
+      delete socket.mcbot;
     });
 
     // bind bot events

app/server/sockets/events/disconnection.js

@@ -4,7 +4,7 @@ module.exports = function(socket) {
   socket.on('disconnect', function() {
     if (socket.mcbot) {
       socket.mcbot.end();
-      socket.mcbot = null;
+      delete socket.mcbot;
     }
   });
 
@@ -12,7 +12,7 @@ module.exports = function(socket) {
   socket.on('bot:disconnect', function() {
     if (socket.mcbot) {
       socket.mcbot.end();
-      socket.mcbot = null;
+      delete socket.mcbot;
     }
   });