bug#50732: 28.0.50; project-find-dir: blank line in fido-vertical-mode

[Stefan Kangas]

Dmitry Gutov <dgutov@yandex.ru> writes:

> OK, I've added './' as an option. That was a bit nontrivial because of
> the existing project-read-file-name-function abstraction.

I'm a bit late to the party here, but FWIW this solution makes sense to
me as well.  Thanks!