bug#16161: 24.3.50; gnutls connections from Gnus no longer work after r115526, bug#16161: 24.3.50; gnutls connections from Gnus no longer work after r115526

[Eli Zaretskii]

> From: Ted Zlatanov <tzz@lifelogs.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  Nix <nix@esperi.org.uk>,  Paul Eggert 
> <eggert@gnu.org>,  16161@debbugs.gnu.org
> Date: Mon, 16 Dec 2013 12:37:28 -0500
> 
> May I replace it with this?  It's what CHECK_LIST
> does, internally, IIUC.
> 
> #+begin_src c
>   if (!CONSP (x) && !NILP (x))
>     error ("gnutls-boot: invalid :verify_error parameter (not a list)");
> #+end_src

Flistp is not bad enough to warrant such inlining, IMO.