bug#21428: 24.5; Crash of emacs on OS X, installed via homebrew cask

[Eli Zaretskii]

> From: Rainer M Krug <Rainer@krugs.de>
> Cc: 21428@debbugs.gnu.org,  mituharu+bug-gnu-emacs-mac@math.s.chiba-u.ac.jp
> Date: Mon, 21 Sep 2015 10:42:44 +0200
> 
> Emacs crashed again.
> 
> Using now:
> 
> ,----
> | GNU Emacs 25.0.50.1 (x86_64-apple-darwin14.5.0, NS appkit-1348.17 Version 
> 10.10.5 (Build 14F27)) of 2015-09-18
> `----
> 
> here is the output from bt full and attached another screenshot.

Thanks, I tried to fix this in commit e2f0dd2.  Please see if the
crashes are gone after that.