notification script doesn't receive update about disconnect

[duckdalbe]

The notification_callback appears to not receive a note after a /disconnect event. But it should, shouldn't it?

In the log these two error messages are shown (not sure if this is related):

* error * disconnected
* async error * Unix.Unix_error(Unix.EBADF, "check_descriptor", "")

[cfcs]

oh, good point, that does indeed sound like a good thing to notify about!