Fix crash in OpticalTactilePlugin by checking for valid visualize pointer #2674
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Signed-off-by: Ian Chen <ichen@openrobotics.org>
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Signed-off-by: Ian Chen <ichen@openrobotics.org> (cherry picked from commit 57599fb)
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Signed-off-by: Ian Chen <ichen@openrobotics.org> (cherry picked from commit 57599fb)
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Signed-off-by: Ian Chen <ichen@openrobotics.org> (cherry picked from commit 57599fb)
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🦟 Bug fix
Fixes #2543
Summary
See steps in #2543 to reproduce the crash.
Calling the service to disable the plugin (when it has never been enabled before) will cause a crash because the optical tactile visualization marker pointer is null (not created yet). This PR adds a check to make sure the optical tactile visualization marker pointer is not null before attempting to remove the visualization markers.
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