bug#40727: 27.0.91; 'cl-loop ... across ... and' seems broken

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@gmail.com>
> Date: Thu, 30 Apr 2020 19:40:43 -0400
> Cc: 40727@debbugs.gnu.org, Tino Calancha <tino.calancha@gmail.com>
> 
> Eli, is it okay to push both of these to emacs-27?  Alternatively,
> reverting both fixes to Bug#29799 in addition to the Bug#29866 fix
> works:

I prefer reverting, thanks.