memset(&route,0,sizeof(route));
if ((sid < ARRAY_SIZE(routing_schemes)) &&
- ((sp = routing_schemes + sid) != 0) &&
+ ((sp = routing_schemes + sid) != NULL) &&
(hdw->input_val >= 0) &&
(hdw->input_val < sp->cnt)) {
vid_input = sp->def[hdw->input_val].vid;