[master] 6db7d75 Use closefd() throughout, take 2

[Dridi Boukelmoune]

> So I'm all for tools, but the resulting changes shouls always be
> stared at manually to catch stuff like this:

This is very embarrassing because I did review them, because I never
bulk-add in git and always work incrementally. So I checked them in
one at the time and missed it.

Allow me to throw more tooling at this and push a fix.

Dridi