bug#50630: 28.0.50; list-directory shows free space for current directory, not the specified one

[Eli Zaretskii]

> Date: Thu, 16 Sep 2021 23:00:50 +0000
> From: John Cummings <john@rootabega.net>
> 
> Hello, long time emacs user; first time reporter. Apologies if I do anything 
> wrong here.

Thanks.  In the future, please make sure Git uses your actual email
address, as without that we need to apply the patch by hand.  Also, we
request a commit log message formatted according to ChangeLog rules;
see CONTRIBUTE for the details.  (I made the necessary changes for you
this time.)

Also, if you intend to contribute in the future, I recommend starting
your legal paperwork rolling for assigning copyright to the FSF.  If
you agree, I will send you the form to fill and the instructions to go
with it.

> Changing the call to get-free-disk-space seemed to work in the attached 
> patch, but I haven't attempted to dig deeper and check for any regressions. I 
> would be glad to do that, but would need more time to research and would 
> probably ask for more help to do it.

The patch makes sense to me, so I installed it, and I'm closing this
bug.

Thanks.