tun2socks: fix assert when SOCKS blocks sending data, and for some reason the code assumed it wouldn't.
tun2socks: fix assert when SOCKS blocks sending data, and for some reason the code assumed it wouldn't.


DavidCox1979/badvpn,DavidCox1979/badvpn,DavidCox1979/badvpn,DavidCox1979/badvpn,DavidCox1979/badvpn