Merge "Properly init bta_dm_search_cb" am: aed7a0b3 am: 9658ac54 am: b9b909cb

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Bluetooth/+/2472285



Change-Id: I2d3d190c24fef0d86912ac7526113d4b49431464
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>