Merge "libbinder: Add test for null non-nullable binder return" am: 8accb65032 am: ff00dd4f6b am: d5dae41776

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2136975

Change-Id: I578b6a5c03659af695ece9af38db68880f01f26c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>