spindle_aux.comp: add error detection for (aux_radius <= 0)
spindle_aux.comp: add error detection for (aux_radius <= 0)

araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit,araisrobo/machinekit