[MacPorts] #47907: libvpx: update to 1.4.0

[MacPorts]

#47907: libvpx: update to 1.4.0
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  Reporter:  ryandesign@…  |      Owner:  devans@…
      Type:  update        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  haspatch
      Port:  libvpx        |
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Comment (by devans@…):

 Never mind, I see you did it already. Sorry for not paying attention.

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Ticket URL: <https://trac.macports.org/ticket/47907#comment:10>
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