+ filter_sys_t *p_sys = p_filter->p_sys;
+
+ var_DelCallback( p_filter, CFG_PREFIX "u", BluescreenCallback, p_sys );
+ var_DelCallback( p_filter, CFG_PREFIX "v", BluescreenCallback, p_sys );
+ var_DelCallback( p_filter, CFG_PREFIX "ut", BluescreenCallback, p_sys );
+ var_DelCallback( p_filter, CFG_PREFIX "vt", BluescreenCallback, p_sys );