Fix goal time violated

See UniversalRobots/Universal_Robots_ROS2_Driver#882

Author: Lennart Nachtigall

joint_trajectory_controller/src/joint_trajectory_controller.cpp

@@ -236,7 +236,7 @@ controller_interface::return_type JointTrajectoryController::update(
       // time_difference is
       // - negative until first point is reached
       // - counting from zero to time_from_start of next point
-      double time_difference = time.seconds() - segment_time_from_start.seconds();
+      const double time_difference = time_data.uptime.seconds() - segment_time_from_start.seconds();
       bool tolerance_violated_while_moving = false;
       bool outside_goal_tolerance = false;
       bool within_goal_time = true;