[MacPorts] #36850: ffmpeg: fix universal build when architectures can't be run

[MacPorts]

#36850: ffmpeg: fix universal build when architectures can't be run
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  Reporter:  devernay  |      Owner:  dbevans
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.1.2
Resolution:            |   Keywords:
      Port:  ffmpeg    |
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Comment (by mascguy):

 Is this still an issue?

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Ticket URL: <https://trac.macports.org/ticket/36850#comment:3>
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