Fix some compile warnings am: 60d03f1aca

Original change: https://android-review.googlesource.com/c/device/generic/goldfish-opengl/+/2465492

Change-Id: Iff943d8789d778d9b8dbfb05c599813af9adce97
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>