Issue  #300: connection.end() causing ECONNRESET
Issue  #300: connection.end() causing ECONNRESET

As suggested by glenjamin at
https://github.com/postwait/node-amqp/issues/300#issuecomment-33868395
this just adds `this.socket.destroy();` to the `connectionCloseOk`
handler.

postwait/node-amqp,postwait/node-amqp,postwait/node-amqp,albert-lacki/node-amqp,albert-lacki/node-amqp,albert-lacki/node-amqp