use rate instead of thread::sleep to react to Ctrl-C #348
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Signed-off-by: Dirk Thomas <dirk-thomas@users.noreply.github.com>
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Fixes #347 by using a
WallRate.sleepinstead ofstd::this_thread::sleep_for.The additional check of
rclcpp::okafter the sleep ensure to not print an error message when Ctrl-C-ing the process: