maybe little fix
net.cpp
1653
setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&nOne, sizeof(int));
change to
setsockopt(hListenSocket, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&nOne, sizeof(int));
after that dont crash when close miner with ctrl+c