[Fix]Close #1451
[Fix]Close #1451

msincenselee/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,bigdig/vnpy,bigdig/vnpy,andrewchenshx/vnpy,vnpy/vnpy,bigdig/vnpy,vnpy/vnpy,andrewchenshx/vnpy,msincenselee/vnpy,andrewchenshx/vnpy,bigdig/vnpy