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

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

Change-Id: I166bc3c0a894411700ea457980cf82d6e7bed818
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>