Do the AcceptTCP() in the example

Since I'm pretty new to Go, I'm not sure I'm doing this right. It seems I got a `use of closed network connection` warning on the first connection after the restart.

    2013/03/26 13:22:06 listening on 0.0.0.0:48879
    2013/03/26 13:22:28 user defined signal 2
    2013/03/26 13:22:28 spawned child 1397
    2013/03/26 13:22:28 resuming listening on [::]:48879
    2013/03/26 13:22:28 terminated
    2013/03/26 13:22:28 accept tcp [::]:48879: use of closed network connection