Merge "ExternalCameraHAL: Fix memory leak when copying buffer fence" into main am: 634ecd5da0

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2817883

Change-Id: Ic9237e2adc2bc384b0ef8d9f9c3bbee690d143aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>