sunyu::update::fix bug about NPE

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

@@ -1843,7 +1843,7 @@ public class ShoppingCartMCoffeeServiceImpl {
         if (CollectionUtils.isNotEmpty(cartGoodsList)) {
             for (CartGoods cartGoods : cartGoodsList) {
                 //购物车已存在商品券
-                if (StringUtils.isNotBlank(cartGoods.getCouponCode())) {
+                if (null != cartGoods && StringUtils.isNotEmpty(cartGoods.getCouponCode())) {
                     ActivityCalculationDiscountRequestDto.CalculationDiscountCoupon calculationDiscountCoupon = new ActivityCalculationDiscountRequestDto.CalculationDiscountCoupon();
                     calculationDiscountCoupon.setCode(cartGoods.getCouponCode());
                     calculationDiscountCoupon.setIsSeedCouponGoods(cartGoods.getIsSeedCouponGoods());