The probe takes a reference to the current lease and so it must
release it upon destruction.
Signed-off-by: Beniamino Galvani <bgalvani@redhat.com>
https://github.com/nettools/n-dhcp4/pull/1
In particular, avoid including linux/netdevice.h from headers. This is
not a problem on newer distros, but required for CentOS 7.6.
Signed-off-by: Tom Gundersen <teg@jklm.no>