bug#45821: Emacs UDP support on Windows

[Eli Zaretskii]

> From: Alex Matei <matei.alexandru@live.com>
> CC: "45821@debbugs.gnu.org" <45821@debbugs.gnu.org>
> Date: Thu, 12 Jan 2023 10:57:31 +0000
> 
> I don’t know – at least wasn’t able to pinpoint something given that even if 
> I run the networking tests
> under GDB, my Emacs just hangs while running the tests, and I have to press 
> C-g to unblock the test run..

I think Robert explained that?  gnutls-serv crashes, so Emacs is
waiting forever for something that doesn't happen.  Or am I missing
something?