[MacPorts] #48318: ffmpeg: Add libx265 support

[MacPorts]

#48318: ffmpeg: Add libx265 support
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  Reporter:  ays388@…     |      Owner:  devans@…
      Type:  enhancement  |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  haspatch
      Port:  ffmpeg       |
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Comment (by ays388@…):

 Oops. Here is the updated patch.

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Ticket URL: <https://trac.macports.org/ticket/48318#comment:3>
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