bug#45821: Emacs UDP support on Windows

[Robert Pluim]

>>>>> On Thu, 12 Jan 2023 11:12:36 +0000, Alex Matei <matei.alexandru@live.com> 
>>>>> said:

    Alex> Yeah – I guess I wasn’t able to asses that myself but yeah, that 
might be the case 😊

Itʼs easy enough to check. run gnutls-serv manually from a shell with
the same parameters as the test, comment out the server creation code
in the relevant test, and run it manually.

Robert
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