- moveto(dev, i->tag, line->x, line->y);
- lineto(dev, i->tag, line->x, line->y);
- lineto(dev, i->tag, line->x, line->y);
+ int x = line?line->x:0;
+ int y = line?line->y:0;
+ moveto(dev, i->tag, x,y);
+ lineto(dev, i->tag, x,y);
+ lineto(dev, i->tag, x,y);