[Buildbot] #3582: cancel buildrequest does not work in the UI

[Buildbot trac]

#3582: cancel buildrequest does not work in the UI
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Reporter:  tardyp  |       Owner:
    Type:  defect  |      Status:  new
Priority:  major   |   Milestone:  0.9.0
 Version:  master  |  Resolution:
Keywords:          |
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Comment (by tardyp):

 fixed by https://github.com/buildbot/buildbot/pull/2324

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Ticket URL: <http://trac.buildbot.net/ticket/3582#comment:1>
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