[MacPorts] #58825: PortIndex on mirrors has incorrect version for iTerm2

[MacPorts]

#58825: PortIndex on mirrors has incorrect version for iTerm2
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  Reporter:  yan12125  |      Owner:  markemer
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  iTerm2    |
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Comment (by jmroot):

 It would be less complicated to use os.major anyway.

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Ticket URL: <https://trac.macports.org/ticket/58825#comment:3>
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