bug#73199: url-retrieve is not thread-safe

[Eli Zaretskii]

> Cc: AlexHarsanyi@gmail.com, Thomas Fitzsimmons <fitzsim@fitzsim.org>,
>  monnier@iro.umontreal.ca
> Date: Mon, 30 Sep 2024 17:12:34 +0200
> From:  Michael Albinus via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> > BTW, in a short discussion on emacs-devel, Stefan Monnier proposed to
> > fix this problem in url-http.el. Don't know what's the better approach.
> 
> I gave it a try. The appended patch seems to fix the problem. At least
> in my use case, there's no error anymore when I use debbugs w/o the
> advice in debbugs-compat.el.
> 
> Comments?

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