Use of closed network connection

[Filip Hodun]

occurs randomly on saving file stage, probably result of killing entire program when broadcast ends without closing network connection

$ ./radiocorder <broadcast url>
INFO[0000] found next broadcast date                     broadcastDuration=0s date="2021-08-04 00:45:03.559908394 +0200 CEST"
FATA[0003] read tcp 192.168.0.12:43012-><broadcast ip and port>: use of closed network connection 

[Filip Hodun]

After newest commits error stopped occurring

[Filip Hodun]

At this moment error occurs again, but don't affect at program work