[MacPorts] #39973: bro: build fails on buildbot

[MacPorts]

#39973: bro: build fails on buildbot
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  Reporter:  ryandesign@…  |      Owner:  tanawts@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.2.0
Resolution:                |   Keywords:
      Port:  bro           |
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Comment (by tanawts@…):

 The port seems to build and install fine for me, what can I do to
 reproduce this buildbot failure so that I can patch for it?

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Ticket URL: <https://trac.macports.org/ticket/39973#comment:1>
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