[MacPorts] #43516: dot2tex patch to accomodate pyparsing changes

[MacPorts]

#43516: dot2tex patch to accomodate pyparsing changes
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  Reporter:  p.bro@…  |      Owner:  snc@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.2.1
Resolution:           |   Keywords:  haspatch
      Port:  dot2tex  |
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Comment (by p.bro@…):

 Darn, I thought that was done automatically. Sorry about that.

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Ticket URL: <https://trac.macports.org/ticket/43516#comment:3>
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