Increment the reference count of CLONING routes before flushing all their children to make sure they are still alive after rtfree(9)ing rt->rt_parent.
Increment the reference count of CLONING routes before flushing all
their children to make sure they are still alive after rtfree(9)ing
rt->rt_parent.

Fix a use-after-fruit reported by stsp@

ok claudio@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars