- xrchart_write_yscale (cr, geom, 0, max, max);
- xrchart_write_xscale (cr, geom, 0, rc->eval->size + 1, rc->eval->size + 1);
+ if (! xrchart_write_yscale (cr, geom, 0, max))
+ return;
+ if (! xrchart_write_xscale (cr, geom, 0, rc->eval->size + 1))
+ return;