Merge "ExternalCameraHAL: Check for empty native handle instead of null." into main am: 7e4037cf01 am: 610693feb0 am: 088c902745

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2787022

Change-Id: Id9c727608d59a07b9109d0192cc6b641e025a49b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>