bug#27272: 25.2; [patch] Fix positional args among keyword args in eldoc.

[npostavs]

Thierry Volpiatto <thierry.volpiatto@gmail.com> writes:

> npostavs@users.sourceforge.net writes:
>
>> Do you mean you have an updated patch that fixes this as well (which you
>> seem to have forgotten to post)?
>
> It is here.

I get a compile warning

In elisp--highlight-function-argument:
../../emacs-master/lisp/progmodes/elisp-mode.el:1404:44:Warning: reference to
    free variable ‘args-lst’

and then at run-time eldoc is non-functional, it just prints

eldoc error: (void-variable args-lst)