clientDisconnect emited twice

[litbak]

when a client disconnects abnormally without a disconnect message, the clientDisconnect event emited twice, which also infulence connected client count.

aedes.on('clientDisconnect', function(client) {
console.log('Client Disconnected: ' + client.id + ' total: ' + aedes.connectedClients);
});

[mcollina]

this should be easy to fix, would you mind sending a PR?

[mcollina]

I've tried hard to reproduce this, and I couldn't.
Can you please add steps to reproduce?

Closing for now