bug#73577: Hint this is the final occur match

[Eli Zaretskii <eliz@gnu.org>]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Mon, 30 Sep 2024 18:43:45 -0700
> 
> Dan Jacobson <jidanni@jidanni.org> writes:
> 
> > Allow us to examine the messages from M-x occur and next-error:
> >
> >   You can run the command ‘occur’ with M-s o
> >   Next locus from *Occur* [4 times]
> >   occur-find-match: No more matches
> >
> > Better would be:
> >
> >   You can run the command ‘occur’ with M-s o
> >   Next locus from *Occur* [3 times]
> >   Final locus from *Occur*
> >
> > That's right. Alerting the user that they are now looking at the final
> > match would help them avoid asking for another match when there are none!
> >
> > emacs-version "29.4"
> 
> IMO, "No more matches" is already clear.

Agreed.  Moreover, we say that in many other cases, so it is a
"de-facto standard".