fix bug

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

@@ -633,7 +633,7 @@ public class CouponDiscountCalculation {
                                                              ShoppingCartGoodsResponseVo shoppingCartGoodsResponseVo) {
 
         List<CartGoods> cartGoodsListNew =new ArrayList<>();
-        if (CollectionUtils.isNotEmpty(calculationDiscount.getDiscounts())) {
+        if (calculationDiscount != null && CollectionUtils.isNotEmpty(calculationDiscount.getDiscounts())) {
             // 对促销返回的数据进行拆分
             List<ActivityCalculationDiscountResponseDto.CalculationDiscountResult.Discount> discounts = calculationDiscount.getDiscounts().stream().filter(discount -> ActivityTypeEnum.TYPE_35.getCode().equals(discount.getType())).collect(Collectors.toList());
             if (CollectionUtils.isNotEmpty(discounts) ){