fix cent order freight

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

@@ -286,6 +286,8 @@ func (self *OrderController) MultCentCreate() {
 	freight := base_config.GetFreight()
 	if totalPrice < base_config.GetOrderLimit() {
 		self.ReturnError(403, []string{apps.OrderNotEnough[0], fmt.Sprintf("订单金额不能低于%d积分", base_config.GetOrderLimit()/int64(100))}, "", nil)
+	} else {
+		freight = int64(0)
 	}
 	//直接抵扣积分，积分不够则报错
 	userLeftCent := cent_model.GetCentTotalBalance(wxUId)