[MacPorts] #51481: libicns: update to 0.8.1

[MacPorts]

#51481: libicns: update to 0.8.1
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  Reporter:  dardo82@…  |      Owner:  macports-tickets@…
      Type:  update     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:  patch
      Port:  libicns    |
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Comment (by mf2k@…):

 @khindenburg: FYI we do not have a "patch" keyword. We do have a
 "haspatch" keyword however.

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Ticket URL: <https://trac.macports.org/ticket/51481#comment:4>
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