Merge "Add safety comments." into main am: 367ade7e am: 619328d7 am: 625c6af8 am: 61fc635c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2671476



Change-Id: I3eaf3e0f531d41ef82e932d8aa7411c4b796c3bc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>