[MacPorts] #58935: go @1.13: build fails on 10.9 and less

[MacPorts]

#58935: go @1.13: build fails on 10.9 and less
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  Reporter:  kencu   |      Owner:  ci42
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  lion mountainlion
      Port:  go      |
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Comment (by kencu):

 I'm going to have to leave this with Chris or Josh or someone; to be
 honest, it's too complicated for me to clearly understand.

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Ticket URL: <https://trac.macports.org/ticket/58935#comment:31>
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