更新支付

go/gopath/src/fohow.com/apps/controllers/pay_controller/pay_exchange_controller.go

@@ -292,7 +292,7 @@ func (self *PayController) payExchange(oId, payWay, returnUrl, source, remark st
 
 		}
 
-		total_weixin = tp - paiedDis
+		total_weixin = total_weixin - paiedDis
 
 		//抵扣佣金
 		paiedCash := int64(0)