Issue #15 Object #<Client> has no method 'destroy'

[thegoleffect]

Fix by checking if client and client.destroy exists, else don't run destroy.

[garbrand]

Just by looking at the code: wouldn't this just jump over the destruction of the oldclient? This just leads to Error: connect EADDRINUSE, since the client is started up trying to bind itself to the same port. Seems the issue might be a little deeper.