bug#43700: 28.0.50; Crash creating a second frame

[Eli Zaretskii]

> Cc: 43700@debbugs.gnu.org
> From: Andy Moreton <andrewjmoreton@gmail.com>
> Date: Sat, 3 Oct 2020 19:21:05 +0100
> 
> >>> 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?
> 
> Yes, and your patch looks to be a robust fix.

Thanks for testing; closing.

(Btw, the frame whose face cache was empty was indeed the original
one, not the second one created by make-frame.  So my watchpoint
"didn't work" originally as well.)