bug#39285: 28.0.50; vc-dir on gitdir results in error

[Lars Ingebrigtsen]

Dmitry Gutov <dgutov@yandex.ru> writes:

> I suppose vc-git-stash-list could handle this better, but you still
> won't get anything better than a misleadingly empty VC-Dir buffer. The
> current behavior might even be better in that regard.
>
> This patch would make it shut up, though:

I think the misleadingly empty directory is better then the cryptic
error, so I applied your patch to Emacs 28.

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