[MacPorts] #39082: xml2: update to 0.5 and fix livecheck

[MacPorts]

#39082: xml2: update to 0.5 and fix livecheck
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  Reporter:  ryandesign@…  |      Owner:  cr@…
      Type:  update        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.1.3
Resolution:  fixed         |   Keywords:  haspatch
      Port:  xml2          |
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Comment (by egall@…):

 Replying to [comment:2 cr@…]:
 > Since there are no dependents,

 Maybe not in trunk, but I have a portfile in my local portfile repo that
 depends on it. Not that you guys should worry about it, but I'll probably
 have to test it myself now to see if things still work the same way...

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Ticket URL: <https://trac.macports.org/ticket/39082#comment:4>
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