ws2_32(6/8): Implement ws_sockaddr_u2ws for AF_IRDA

[Juan Lang]

>> +            sprintf( win->irdaServiceName, "LSAP-SEL%d", uin->sir_lsap_sel );
> I have no idea if this can even be an issue in practice, but
> "uin->sir_lsap_sel" is unsigned.

It can't be an issue in practice since LSAP selectors are limited to
0-9, but I can change that.  Thanks for the review.
--Juan