Better cleanup after wait_for_guest_boot.
Better cleanup after wait_for_guest_boot.

The problem is that I was not closing out file descriptors after
finishing with them.  In theory this should not be a problem, but
it was not working all of the time.  Just to be tidy, close out
fds after use.

Signed-off-by: Chris Lalancette <60b62644009db6b194cc0445b64e9b27bb26433a@redhat.com>

NeilBryant/oz,imcleod/oz,ndonegan/oz,moofrank/oz,nullr0ute/oz,nullr0ute/oz,NeilBryant/oz,clalancette/oz,clalancette/oz,cernops/oz,mgagne/oz,imcleod/oz,cernops/oz,mgagne/oz,moofrank/oz,ndonegan/oz