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

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

Change-Id: I2fa62f0ce32c0bf0226bf54dbf9125b25734a984
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>