[MacPorts] #68250: qgis3-ltr: crash on startup with macOS 13.6 and Xcode 15

[MacPorts]

#68250: qgis3-ltr: crash on startup with macOS 13.6 and Xcode 15
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  Reporter:  nilason    |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  qgis3-ltr  |
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Comment (by nilason):

 I see {{{libunwind}}} is loaded from both system
 (/usr/lib/system/libunwind.dylib) and MP
 (/opt/local/lib/libunwind.1.dylib).

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Ticket URL: <https://trac.macports.org/ticket/68250#comment:2>
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