repair the refund amount

src/main/java/com/ctrip/fun/golf/service/order/OpEventActivityOrderService.java

@@ -359,7 +359,7 @@ public class OpEventActivityOrderService
                     logger.info("赛事余额退款差值" + refundDelta.intValue());
                 	if(refundDelta.compareTo(BigDecimal.ZERO) == 1){
                 		//超出他原有用余额付款的金额, 超出部分对冲银行卡付款的金额
-                		order.setRefundAmount(refundDelta);
+                		order.setRefundAmount(refundDelta.add(order.getRefundAmount()));
                 		//余额退款金额就是全部余额支付的部分
                 		order.setPrePayCardRefundAmount(order.getPrePayCardAmount());
                 	}