[MacPorts] #47423: libsmi @0.4.8_0: update to 0.5.0

[MacPorts]

#47423: libsmi @0.4.8_0: update to 0.5.0
----------------------------+--------------------------------
 Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
     Type:  update          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.3
 Keywords:  haspatch        |       Port:  libsmi
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 libsmi was updated to version 0.5.0 (last year). I've also added a
 modeline and cleaned up the mixed whitespace (spaces and tabs).

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Ticket URL: <https://trac.macports.org/ticket/47423>
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