dns/powerdns-recursor: fix cherry-pick misadventure

In the original cherry-pick, I had not cherry-picked the update to
5.4.0, causing some required hunks to be missing. This should fix
those missing bits for real.

PR: 294749
Fixes: 2eb9a17bf93c7001a27b30e09a323b7cf79c3469
Reported by: Ralf van der Enden <tremere@cainites.net>