修复价格累加

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

@@ -61,6 +61,7 @@ public class SetMealCalculation {
 //            cartGoods.setOriginalAmount(cartGoods.getOriginalPrice() * cartGoods.getQty());
             cartGoods.setPackPrice(cartGoods.getPackPrice() * cartGoods.getQty());
             // 可选商品现总价
+            productGroupTotalAmount = 0l;
             long productGroupAmount = cartGoods.getProductGroupList().stream().mapToLong(t -> t.getFinalPrice() * t.getQty()).sum();
             productGroupTotalAmount += productGroupAmount * cartGoods.getQty();