fix initialization of attitude controllers

src/lib/ecl/attitude_fw/ecl_roll_controller.cpp

@@ -50,13 +50,17 @@
 ECL_RollController::ECL_RollController() :
 	_last_run(0),
 	_tc(0.1f),
+	_k_p(0.0f),
+	_k_i(0.0f),
+	_k_d(0.0f),
+	_integrator_max(0.0f),
+	_max_rate(0.0f),
 	_last_output(0.0f),
 	_integrator(0.0f),
 	_rate_error(0.0f),
 	_rate_setpoint(0.0f),
 	_bodyrate_setpoint(0.0f)
 {
-
 }
 
 float ECL_RollController::control_attitude(float roll_setpoint, float roll)