[Fix]Close #605
[Fix]Close #605

msincenselee/vnpy,wisfern/vnpy,msincenselee/vnpy,rrrrrr8/vnpy,rrrrrr8/vnpy,rrrrrr8/vnpy,andrewchenshx/vnpy,bigdig/vnpy,msincenselee/vnpy,harveywwu/vnpy,rrrrrr8/vnpy,andrewchenshx/vnpy,harveywwu/vnpy,bigdig/vnpy,bigdig/vnpy,rrrrrr8/vnpy,harveywwu/vnpy,wisfern/vnpy,bigdig/vnpy,andrewchenshx/vnpy,wisfern/vnpy,wisfern/vnpy,rrrrrr8/vnpy,wisfern/vnpy,vnpy/vnpy,wisfern/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,harveywwu/vnpy,harveywwu/vnpy,vnpy/vnpy,andrewchenshx/vnpy,harveywwu/vnpy