Philip Withnall authored Aug 12, 2014 and Olivier Crête committed Aug 31, 2014

Change pseudo_tcp_socket_recv() to return 0 if in non-FIN–ACK mode and
the socket has been shut down. This makes the behaviour of FIN–ACK and
non-FIN–ACK modes consistent.

This is a behaviour change from before the introduction of FIN–ACK mode
— previously, pseudo_tcp_socket_recv() would return -1 and set the
ENOTCONN error if called after the socket had been shut down (i.e. after
pseudo_tcp_socket_get_next_clock() had returned FALSE). The new
behaviour will hopefully not break anything.