[MacPorts] #40776: unrar: update to 5.0

[MacPorts]

#40776: unrar: update to 5.0
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  Reporter:  vergus@…  |      Owner:  macports-tickets@…
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.2.0
Resolution:            |   Keywords:
      Port:  unrar     |
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Comment (by obtanium@…):

 Please update this, there's no compatibility issues. Just downloaded the
 source and built it fine. The patch files don't substantially change
 either, only some line differences due to extra code added.

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Ticket URL: <https://trac.macports.org/ticket/40776#comment:5>
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