[Buildbot] #3559: poller change_hook is broken

[Buildbot trac]

#3559: poller change_hook is broken
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Reporter:  gracinet  |       Owner:  gracinet
    Type:  defect    |      Status:  assigned
Priority:  minor     |   Milestone:  0.9.0
 Version:  0.9.0b9   |  Resolution:
Keywords:            |
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Comment (by tardyp):

 another approach:
 https://github.com/buildbot/buildbot/pull/2290

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Ticket URL: <http://trac.buildbot.net/ticket/3559#comment:3>
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