[MacPorts] #54896: bedtools @2.26.0: build error with Xcode 9.0

[MacPorts]

#54896: bedtools @2.26.0: build error with Xcode 9.0
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  Reporter:  ikizhvatov  |      Owner:  arjanvandervelde
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.4.1
Resolution:              |   Keywords:
      Port:  bedtools    |
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Comment (by ikizhvatov):

 I am not sure if upstream works: on my system I pull master from
 https://github.com/arq5x/bedtools2 and the build error is the same as I
 reported originally for the macports build.

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Ticket URL: <https://trac.macports.org/ticket/54896#comment:3>
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