[Buildbot] #2524: Property('buildnumber') returns None on first build

[Buildbot trac]

#2524: Property('buildnumber') returns None on first build
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Reporter:  cmumford       |       Owner:
    Type:  defect         |      Status:  new
Priority:  major          |   Milestone:  0.8.x
 Version:  0.8.7p1        |  Resolution:
Keywords:  simple, tests  |
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Changes (by dustin):

 * milestone:  0.9.+ => 0.8.x


Comment:

 This was discussed in a pull request recently.  The problem isn't that the
 buildnumber wasn't assigned; it's that Property defaults to its second
 parameter (which defaults to `None`) if the property evaluates to
 something Python considers false, unless its third parameter is true.

 The fix is in https://github.com/buildbot/buildbot/pull/1552.

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Ticket URL: <http://trac.buildbot.net/ticket/2524#comment:4>
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