Merge branch 'ondrej/refactor-DNS_RDATASET_FIXED-code-flow-v9_12' into 'v9_12'

(v9_12) Refactor the DNS_RDATASET_FIXED code to use macros instead of ifdefs

See merge request !1819
2 jobs for v9_12 in 1 minute and 5 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #215122
amd64 linux
docs:sid:amd64

00:00:52

 
  Push
passed #215123
amd64 linux
push:docs:sid:amd64

00:00:13