surface: Avoid potential division by zero
surface: Avoid potential division by zero

gpyh/wlc,ss1h2a3tw/wlc,Enerccio/ewlc,gpyh/wlc,vially/wlc,Cloudef/wlc,Enerccio/ewlc,yohanesu75/wlc,vially/wlc,Cloudef/wlc,yohanesu75/wlc,ss1h2a3tw/wlc