Fix compiler warning discovered by clang-r484482 am: 07448c2929 am: ba993e51e8 am: 661d9018c7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2402792

Change-Id: I195de8f952c0b9091e4e57d64535e4e2014f3fb5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>