[MacPorts] #52980: incorrect name in dependency list for vtk5

[MacPorts]

#52980: incorrect name in dependency list for vtk5
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  Reporter:  srobertp  |      Owner:
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.3.5
Resolution:            |   Keywords:
      Port:  vtk5      |
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Comment (by srobertp):

 I should say that this might actually be an error in the libpcl port which
 requires the dependency vtk5 to be installed with the +qt4-mac but it is
 spelled +qt4_mac.

 it comes from attempting

 port install libpcl

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Ticket URL: <https://trac.macports.org/ticket/52980#comment:1>
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