[MacPorts] #51687: ldas-tools: fix build on 10.11+

[MacPorts]

#51687: ldas-tools: fix build on 10.11+
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  Reporter:  ram@…       |      Owner:  ed.maros@…
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:  haspatch
      Port:  ldas-tools  |
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Comment (by ram@…):

 I didn't bump the revision as the contents of the port are unchanged, this
 change will simply allow it to build on systems where it didn't build
 before.

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Ticket URL: <https://trac.macports.org/ticket/51687#comment:1>
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