need to adjust point count earlier

Author: acmorrow

resources/external_control.urscript

@@ -1196,16 +1196,16 @@ while control_mode > MODE_STOPPED:
       elif params_mult[2] == TRAJECTORY_MODE_CANCEL:
         textmsg("cancel received")
         kill thread_trajectory
-        request_trajectory_cleanup()
-        stopj(STOPJ_ACCELERATION)
-        wait_for_trajectory_cleanup()
         # The streaming session, if any, has been forcibly ended; clear
         # the flag so a subsequent stray STREAM_END is a no-op.
 	if trajectory_streaming:
 	  # In streaming mode, a cancel should come with the total count, just like a STREAM_END.
 	  trajectory_points_left = params_mult[3] - (STREAMING_SENTINEL - trajectory_points_left)
           trajectory_streaming = False
 	end
+        request_trajectory_cleanup()
+        stopj(STOPJ_ACCELERATION)
+        wait_for_trajectory_cleanup()
         socket_send_int(TRAJECTORY_RESULT_CANCELED, "trajectory_socket")
       end
     elif control_mode == MODE_SPEEDL: