[MacPorts] #57332: kde4-workspace fails to build with Xcode 10

[MacPorts]

#57332: kde4-workspace fails to build with Xcode 10
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  Reporter:  cs0rfecs0rfe    |      Owner:  RJVB
      Type:  defect          |     Status:  assigned
  Priority:  Normal          |  Milestone:
 Component:  ports           |    Version:  2.5.4
Resolution:                  |   Keywords:
      Port:  kde4-workspace  |
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Comment (by RJVB):

 https://github.com/macports/macports-ports/pull/2994

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Ticket URL: <https://trac.macports.org/ticket/57332#comment:29>
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