bug#18336: 24.4.50; When editing externally changed file, Emacs asks too many questions

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@gmail.com>
> Cc: dak@gnu.org,  stefan@marxist.se,  18336@debbugs.gnu.org
> Date: Sun, 22 Mar 2020 15:46:33 -0400
> 
> > AFAIU, 'fn' in lock_file is the file we want to lock, not the file we
> > create to indicate the lock.  Am I missing something?
> 
> Oh, you're right, I was confused.  The patch below seems to work.

LGTM, thanks.