[MacPorts] #65791: nhc98 fails to parse on selfupdate

[MacPorts]

#65791: nhc98 fails to parse on selfupdate
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 Reporter:  JohnFHall  |      Owner:  (none)
     Type:  defect     |     Status:  assigned
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.7.2
 Keywords:             |       Port:  nhc98
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 Port -v selfupdate returns:

 Failed to parse file lang/nhc98/Portfile: invalid command name
 "build_arch"

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Ticket URL: <https://trac.macports.org/ticket/65791>
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