Hexa crash after watchdog reset

[sergbokh (Sergey)]

@tridge

Many thanks for your bug report! I believe I’ve found the cause for this issue and there will be a patch for 4.0.1rc2

Critical issue? Is it safe to fly latest 4.0 version?

Nevermind, already found Copter-4.0.1-rc2 available for beta testing -- Critical Fix Included