Merge "libvpx: fix compile error" am: f815daee7e

Original change: https://android-review.googlesource.com/c/platform/external/libvpx/+/2401054

Change-Id: Ic289f6093d7c9ffc74502b0160a015492448bc30
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>