socket: fix socket_setup() compat case
socket: fix socket_setup() compat case

ifndef SO_NOSIGPIPE was broken

markokr/libusual,rabbitt/libusual,markokr/libusual,ifduyue/libusual,ifduyue/libusual,rabbitt/libusual,mgjv/libusual,markokr/libusual,mgjv/libusual,rabbitt/libusual,markokr/libusual,rabbitt/libusual,mgjv/libusual,mgjv/libusual,ifduyue/libusual,ifduyue/libusual