Merge "onRegistrationImpl: handle getTransport error" am: c958ae096a am: a8e8f13e8d am: bb5861031e

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/1557026

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Icbfb02854ffd0ebe40ca84d0ed47fe43c6d75404