Fix unqualified-std-cast-call compiler warning am: b6882611 am: f365ad34...

Fix unqualified-std-cast-call compiler warning am: b6882611 am: f365ad34 am: 00968cfc am: 0799f41d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2188040



Change-Id: I6a8196417f138f3ac85020c5a2e5803cd7942c18
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>