lib/resolve: fix zonecut fetching for explicit DS queries

3 jobs for <span class="ref-name">fix-rare-ds</span> in 1 minute and 57 seconds
Status Job ID Name Coverage
  Build
passed #2420
docker linux amd64
build:linux:amd64

00:00:35

 
  Test
passed #2422
docker linux amd64
deckard:linux:amd64

00:01:22

passed #2421
docker linux amd64
test:linux:amd64

00:00:40