[MacPorts] #29857: Incompatible library version: libQtGui.4.dylib requires version 45.0.0 or later, but libpng12.0.dylib provides version 44.0.0

[MacPorts]

#29857: Incompatible library version: libQtGui.4.dylib requires version 45.0.0 or
later, but libpng12.0.dylib provides version 44.0.0
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 Reporter:  thomas.haymore@…          |       Owner:  macports-tickets@…                   
     Type:  defect                    |      Status:  new                                  
 Priority:  Normal                    |   Milestone:                                       
Component:  ports                     |     Version:  1.9.2                                
 Keywords:                            |        Port:                                       
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Comment(by ryandesign@…):

 libpng was upgraded to 1.4 a long time ago. See #29831 for some steps you
 can try.

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Ticket URL: <https://trac.macports.org/ticket/29857#comment:1>
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