bug#37957: BibTeX dialect not set if local variables disabled

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Mon, 28 Oct 2019 17:42:37 +0100
> Cc: 37957@debbugs.gnu.org
> 
> Richard Copley <rcopley@gmail.com> writes:
> 
> > No, it would be a waste of everybody's time. Try this one liner:
> >
> > emacs -Q -eval "(with-current-buffer \"*empty*\" (setq 
> > enable-local-variables nil)
> > (bibtex-mode) (bibtex-parse-buffers-stealthily))"
> 
> "No buffer named *empty*"
> 
> But even if I fix the expression, I'm still not able to reproduce the
> bug in Emacs 27.  You didn't include the Emacs version in your bug
> report, unfortunately.

FWIW, reproduces fine here, both with Emacs 26.3 and Emacs 27, both on
MS-Windows and on GNU/Linux.