Merge "Merge "USB MIDI: Null check for mUsbMidiPacketConverter" into tm-dev am: 0559661c am: 63a301c8" into tm-d1-dev-plus-aosp am: a00896ea am: 5cf641ce

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18529017



Change-Id: Id5d397c35d055317af50d082517e0447f4bd9da6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>