sunyu::update::fix bug about updateGoodsQty NPE

shopping-cart-application-service/src/main/java/cn/freemud/service/impl/mcoffee/ShoppingCartMCoffeeServiceImpl.java

@@ -537,7 +537,7 @@ public class ShoppingCartMCoffeeServiceImpl {
                     if (cartGoodsList.size()>1) {
                         Iterator<CartGoods> cartGoodsIterator = cartGoodsList.iterator();
                         while (cartGoodsIterator.hasNext()) {
-                            String couponCode = null != cartGoodsIterator.next() ?
+                            String couponCode = null != cartGoodsIterator.next() && StringUtils.isNotEmpty(cartGoodsIterator.next().getCouponCode()) ?
                                     cartGoodsIterator.next().getCouponCode() : "";
                             if (StringUtils.isNotEmpty(couponCode) && couponCode.equals(goods.getMonthCardInfo().getCardCode()))
                             {