Empty/Undefined error-Events

[Bizarrus]

If you try to send to an stored client-socket and the client is currently unavailable you've got an exception.

events.js:72
        throw er; // Unhandled 'error' event
          ^
Error: read ECONNRESET
    at errnoException (net.js:904:11)
    at TCP.onread (net.js:558:19)

The problem is: When the socket receive an error over socket.on('error', callback(event) and the event is empty or undefined, that breaks the complete Node.js application.

I've solved the problem but i will test it currently. I will make a pull request today.