* grp.cc (getgrouplist): Fix setting ngroups to make sure to return
	the right value.
	* grp.cc (getgrouplist): Fix setting ngroups to make sure to return
	the right value.
	* fhandler_socket.cc (fhandler_socket::evaluate_events): Call
	WSASetLastError after setsockopt.  Explain why.
	* fhandler_socket.cc (fhandler_socket::evaluate_events): Call
	WSASetLastError after setsockopt.  Explain why.
* passwd.c (main): Fix typo in error output.