Fix some compile warnings am: 0ef4005e08

Original change: https://android-review.googlesource.com/c/device/generic/goldfish-opengl/+/2440055

Change-Id: I79163f9dcbea4d70a7f94d46e3ac61ef1e663e7e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>