Merge "BT: fix NPE issue in bt stack." am: 46cc1a14 am: 2bbbbd0d am: 33eb566d am: 5823b9d9

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2219525



Change-Id: I24455a2f38e345f35400e3c1e7651c16e27087d4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>