Function cleanup

public/javascripts/socket.io.js:4192–4198

()

	  // Remove all listeners on the transport and on self
	  function cleanup () {
	    transport.removeListener('open', onTransportOpen);
	    transport.removeListener('error', onerror);
	    transport.removeListener('close', onTransportClose);
	    self.removeListener('close', onclose);
	    self.removeListener('upgrading', onupgrade);
	  }

	  transport.once('open', onTransportOpen);
	  transport.once('error', onerror);