应用模块的rt_module_unload函数的bug

        list = &module->module_object[RT_Object_Class_Thread].object_list;
        while (list->next != list)
        {
            object = rt_list_entry(list->next, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
        }

        list = &module->module_object[RT_Object_Class_Thread].object_list;
        while (list->next != &module->module_object[RT_Object_Class_Thread].object_list)
        {
            object = rt_list_entry(list->next, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
            list = list->next;
        }

        struct rt_list_node *node;
        list = &module->module_object[RT_Object_Class_Thread].object_list;
        node = list->next;
        while (node != list)
        {
            object = rt_list_entry(node, struct rt_object, list);
            if (rt_object_is_systemobject(object) == RT_TRUE)
            {
                /* detach static object */
                rt_thread_detach((rt_thread_t)object);
            }
            else
            {
                /* delete dynamic object */
                rt_thread_delete((rt_thread_t)object);
            }
            node = node->next;
        }