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

[Code Health] Fix misc-const-correctness build warning am: 50746ee1 am: 2606af27 am: d11f6a9e am: 61208c05 am: 270cbd67 am: dfd84cd6 am: 0f6e2f7d

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



Change-Id: If1a1aac575c2c0657e424e9db92bf4a06eb9a92e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>