* net.cc (free_char_list): New static function.

    * net.cc (free_char_list): New static function.
        (dup_char_list): Ditto.
        (free_protoent_ptr): Ditto.
        (dup_protoent_ptr): Ditto.
        (free_servent_ptr): Ditto.
        (dup_servent_ptr): Ditto.
        (free_hostent_ptr): Ditto.
        (dup_hostent_ptr): Ditto.
        (cygwin_inet_ntoa): Use local static buffer to allow propagating of
        the result to child processes.
        (cygwin_getprotobyname): Ditto.
        (cygwin_getprotobynumber): Ditto.
        (cygwin_getservbyname): Ditto.
        (cygwin_getservbyport): Ditto.
        (cygwin_gethostbyname): Ditto.
        (cygwin_gethostbyaddr): Ditto.