make parse_error_mask a static member function

ros-industrial / ros_canopen

CANopen driver framework for ROS (http://wiki.ros.org/ros_canopen)

GNU Lesser General Public License v3.0

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Closed mathias-luedtke closed 3 years ago

mathias-luedtke commented 3 years ago

this prevents from duplicated definitions (like #399 )

@timple: please review