[MacPorts] #56895: aquaterm @1.1.1 build fails with Xcode 10.0 (b5) on Mojave beta5

[MacPorts]

#56895: aquaterm @1.1.1  build fails with Xcode 10.0 (b5) on Mojave beta5
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  Reporter:  AP1010    |      Owner:  g5pw
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.5.3
Resolution:            |   Keywords:  mojave
      Port:  aquaterm  |
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Comment (by kencu):

 I found a simpler fix. It's up as a PR, and if the bots build it, then we
 can commit.

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Ticket URL: <https://trac.macports.org/ticket/56895#comment:21>
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