bug#43700: 28.0.50; Crash creating a second frame

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Eli Zaretskii <eliz@gnu.org>,  43700@debbugs.gnu.org
> Date: Sat, 03 Oct 2020 19:21:40 +0200
> 
> Andy Moreton <andrewjmoreton@gmail.com> writes:
> 
> > After minimising my init.el and macroexpanding to get rid of
> > use-package, I now have a minimal recipe to reproduce the problem.
> > Run:
> >     emacs -Q --load bug43700.el
> 
> I can reproduce this segfault on Debian bullseye, too.

Sure, it isn't w32-specific.

Did I fix it now?