bug#10035: Crash in check_x_frame in w32fns.c

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Thu, 17 Nov 2011 00:13:56 +0100
> Cc: cschol2112@googlemail.com, 10035@debbugs.gnu.org
> 
> (require 'bs)
> (global-set-key [s-f9] 'bs-cycle-previous)
> (global-set-key [f9] 'bs-cycle-next)
> --------------------------------------------------------------------------------
> 
> and from the src/ directory I run
> 
>   gdb -ex run --args ..\bin\emacs.exe -Q -l test.el blockinput.h
> w32term.c w32inevt.c
> 
> then
> 
>   C-x 1   ; to remove the buffer list window
>   <f9> <s-f9>    ; or <s-f9> <f9>

Reproduced, thanks.