parse_and_open without closing the fd

[Keith Busch]

On Mon, Nov 20, 2017 at 03:11:28PM -0500, Thomas Tai wrote:
> > It's implicitly closed on exit. This is a short-lived one-shot program,
> > so there is some laziness with accounting for all resources that are
> > automatically reclaimed. That said, it's still nice to clean this up as
> > we find such examples.
> > 
> 
> I see. Thanks Keith for your quick response.

Fixed now. :)