[fpc-pascal] Return value of StrToHostAddr and StrToHostAddr6 in sockets unit

[Michael Van Canneyt]

Applied, thank you very much !

Michael.

On Sat, 16 May 2020, Noel Duffy via fpc-pascal wrote:

> Per discussions, I've posted a proposed patch on bug 37060
>
> https://bugs.freepascal.org/view.php?id=37060
>
> I've also attached a test program that exercises the new functions.
>
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