[MacPorts] #55330: libnetpbm @10.80.01: destroot fails due to non-standard group name

[MacPorts]

#55330: libnetpbm @10.80.01: destroot fails due to non-standard group name
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  Reporter:  chucko58   |      Owner:
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:
Resolution:             |   Keywords:
      Port:  libnetpbm  |
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Comment (by chucko58):

 There are 244 other ports installed on this machine via MacPorts. So the
 problem being reported appears specific to libnetpbm.

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Ticket URL: <https://trac.macports.org/ticket/55330#comment:1>
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