Warning: control reaches end of non-void function [-Wreturn-type]

[BaltashovIlia]

Hi,

I just compiled jsk_visualization with GCC 9.3.0 and -Wall enabled, and found that many functions do not have a return statement:

• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/src/bounding_box_marker.cpp#L76
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/include/jsk_interactive_marker/transformable_object.h#L27
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/include/jsk_interactive_marker/transformable_object.h#L69
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/src/yaml_menu_handler.cpp#L10
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_rviz_plugins/src/human_skeleton_array_display.cpp#L69
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/include/jsk_interactive_marker/transformable_object.h#L27
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/include/jsk_interactive_marker/transformable_object.h#L69
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/src/parent_and_child_interactive_marker_server.cpp#L112
• https://github.com/jsk-ros-pkg/jsk_visualization/blob/master/jsk_interactive_markers/jsk_interactive_marker/src/footstep_marker.cpp#L492

[k-okada]

@BaltashovIlia thanks for report, could add return statement to these code and send us PR ?