[MacPorts] #41890: Compilation fix and update of dar port

[MacPorts]

#41890: Compilation fix and update of dar port
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  Reporter:  jan@…   |      Owner:  macports-tickets@…
      Type:  update  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:  2.2.1
Resolution:          |   Keywords:  haspatch
      Port:  dar     |
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Comment (by macsforever2000@…):

 I noticed a few issues:
   - The {{{revision}}} needs to be deleted as with all version upgrades.
   - A {{{sha256}}} checksum should be added per Macports standards.

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Ticket URL: <https://trac.macports.org/ticket/41890#comment:1>
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