[fpc-pascal] fpbind ipv6 version

[Rainer Stratmann]

https://www.freepascal.org/docs-html/current/rtl/sockets/fpbind.html

Is there an example for IPV6?

function fpbind(
  s: cint;
  addrx: psockaddr;
  addrlen: TSockLen
):cint;

I guess psockaddr is different in IPV6 version.