bug#31706: Emacs 26.1 unable to visit files in vc-git buffer's links after vc-pull

[Eli Zaretskii]

> Date: Sun, 10 Jun 2018 21:14:42 +0100
> From: Alan Third <alan@idiocy.org>
> Cc: van@scratch.space, 31706@debbugs.gnu.org
> 
> > Maybe we should simply backport both the above commit and its
> > predecessor 8f36155e8f83164c6aec98a5d1d475f28b513b53?
> 
> They both apply cleanly to emacs-26.
> 
> I wouldn’t have thought this was a big enough problem for Emacs 26.2,
> though?

But the commits are quite safe, don't you think?  And fix a
long-standing problem.  So I see no reason not to backport.