Bug description: Reversers are locked on if autopilot speed is enabled while reversers activated.
Steps to reproduce:
- Hold throttle slider down to enable reversers (on ground above 30kts for all aircraft or any time for c130).
- While reverse thrust active, enable autopilot speed hold.
- Release throttle slider and reverse thrust will continue to be applied by autopilot.
Device: Nexus 9 running Android 6.0.1.