bug#52414: backtrace when emacs get to stuck

[Eli Zaretskii]

> Date: Sat, 11 Dec 2021 17:26:42 +0200
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 52414@debbugs.gnu.org
> 
> Thanks.  We are trying to close a handle on which the reader thread
> already started reading, so the OS doesn't let us delete it.
> 
> This whole pipe-process stuff is flaky on MS-Windows.  Patches to fix
> it are welcome.

I installed on the master branch a fix which hopefully won't break
anything.  Please see if it fixes your problem.

Thanks.