grufwub/ircg: ircg.go; 25 LoC

Found a possible issue in [grufwub/ircg](https://www.github.com/grufwub/ircg) at [ircg.go](https://github.com/grufwub/ircg/blob/40d6d4176216e8a66c3df3048c0747f6db975b52/ircg.go#L28-L52)

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first
issue it finds, so please do not limit your consideration to the contents of the below message.

> range-loop variable listener used in defer or goroutine at line 33

[Click here to see the code in its original context.](https://github.com/grufwub/ircg/blob/40d6d4176216e8a66c3df3048c0747f6db975b52/ircg.go#L28-L52)

Click here to show the 25 line(s) of Go which triggered the analyzer.

```go
for _, listener := range Serv.Listeners {
log.Printf("Now serving on: %s\n", listener.Listener.Addr().String())
go func() {
for {
/* Accept new connection */
conn, err := listener.Accept()
if err != nil {
log.Printf("Accept connection failed: %s\n", err.Error())
}

/* Run this in a separate goroutine to get straight back to accepting */
go func() {
/* Setup new client */
client := NewIrcClient(conn)
client.Init()

/* Add the client to the server client map */
Server.AddClient(client)

/* Start the client loop :) */
go client.Serve()
}()
}
}()
}

```

Leave a reaction on this issue to contribute to the project by classifying this instance as a **Bug** :-1:, **Mitigated** :+1:, or **Desirable Behavior** :rocket:
See the descriptions of the classifications [here](https://github.com/github-vet/rangeclosure-findings#how-can-i-help) for more information.

commit ID: 40d6d4176216e8a66c3df3048c0747f6db975b52