[PATCH] cli: use designated initializers for opt desc

[David Bremner]

Jani Nikula <jani at nikula.org> writes:

> Several changes at once, just to not have to change the same lines
> several times over:

the general approach here looks fine. I didn't see any blockers, but
I'll wait a few days before merging.

This probably causes some rebasing pain for other people, but I think
it's one of those "rip the band-aid off quickly" scenarios.

d