[MacPorts] #58822: Update for port nsd

[MacPorts]

#58822: Update for port nsd
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 Reporter:  gctwnl    |      Owner:  (none)
     Type:  update    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.5.4
 Keywords:  haspatch  |       Port:  nsd
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 I have updated nsd from 4.1.22 to 4.2.1 and added myself as maintainer. I
 have added statements to the portfile for a startupitem.

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Ticket URL: <https://trac.macports.org/ticket/58822>
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