bug#25203: 25.1; crash during message, infinite recursion

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@users.sourceforge.net>
> Date: Thu, 15 Dec 2016 11:11:38 -0500
> Cc: Hin-Tak Leung <hintak.leung@gmail.com>, htl10@users.sourceforge.net, 
>       25203@debbugs.gnu.org
> 
> Shouldn't max-specdl or max-lisp-eval-depth be catching too deep
> recursive calls?

This is not called in Lisp, it's called from C.  982 call frames
divided by 19 and multiplied by 5 (the number of calls to eval_sub)
gives 258, much smaller than max-lisp-eval-depth.