[MacPorts] #56087: ntpsec @1.1.0: broken for macOS <10.13

[MacPorts]

#56087: ntpsec @1.1.0:  broken for macOS <10.13
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  Reporter:  fhgwright  |      Owner:  lbschenkel
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  ntpsec     |
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Comment (by fhgwright):

 I finally had time to test this adequately, and opened a PR for it:

 https://github.com/macports/macports-ports/pull/1470

 Travis tests have passed.

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Ticket URL: <https://trac.macports.org/ticket/56087#comment:6>
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