Disable pusher assist for quadchute failsafe

src/modules/vtol_att_control/standard.cpp

@@ -401,6 +401,13 @@ void Standard::update_mc_state()
 		return;
 	}
 
+	// Do not engage pusher assist during a failsafe event
+	// There could be a problem with the fixed wing drive
+	if (_attc->get_vtol_vehicle_status()->vtol_transition_failsafe) {
+		_pusher_throttle = 0.0f;
+		return;
+	}
+
 	matrix::Dcmf R(matrix::Quatf(_v_att->q));
 	matrix::Dcmf R_sp(matrix::Quatf(_v_att_sp->q_d));
 	matrix::Eulerf euler(R);