add clear product cache

go/gopath/src/fohow.com/apps/controllers/order_controller/cart_controller.go

@@ -242,9 +242,9 @@ func (self *OrderController) GetCartList() {
 		}
 		item.Package = product.Package
 		if product.Package {
-			cart_package := &order_model.ProductItem{}
 			packageList := product_model.GetPackageList(product.Id, true)
 			for _, package_one := range packageList {
+				cart_package := &order_model.ProductItem{}
 				cart_package.ProductId = package_one.ProductId
 				cart_package.ItemId = package_one.ItemId
 				cart_package.ItemTitle = package_one.ItemTitle