Copter: set jerk to default for circle and guided

ArduCopter/control_circle.cpp

@@ -15,6 +15,7 @@ bool Copter::circle_init(bool ignore_checks)
         // initialize speeds and accelerations
         pos_control.set_speed_xy(wp_nav.get_speed_xy());
         pos_control.set_accel_xy(wp_nav.get_wp_acceleration());
+        pos_control.set_jerk_xy_to_default();
         pos_control.set_speed_z(-g.pilot_velocity_z_max, g.pilot_velocity_z_max);
         pos_control.set_accel_z(g.pilot_accel_z);
 

ArduCopter/control_guided.cpp

@@ -113,6 +113,7 @@ void Copter::guided_posvel_control_start()
     // set speed and acceleration from wpnav's speed and acceleration
     pos_control.set_speed_xy(wp_nav.get_speed_xy());
     pos_control.set_accel_xy(wp_nav.get_wp_acceleration());
+    pos_control.set_jerk_xy_to_default();
 
     const Vector3f& curr_pos = inertial_nav.get_position();
     const Vector3f& curr_vel = inertial_nav.get_velocity();