[Code Health] Fix misc-const-correctness build warning am: 50746ee1 am:...

[Code Health] Fix misc-const-correctness build warning am: 50746ee1 am: 86fed968 am: 73557dca am: dc136e9e am: 5861bcf6 am: 20f4f9a2

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2509035



Change-Id: I1bc2661f2d6961e9442829b99036baafb6f0ec39
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>