[MacPorts] #28029: Updating libpng from @1.2.44_0 to @1.4.5_0 leaves libcanberra, libgsf, libnotify linking against a non-existent library

[MacPorts]

#28029: Updating libpng from @1.2.44_0 to @1.4.5_0 leaves libcanberra, libgsf,
libnotify linking against a non-existent library
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 Reporter:  cubranic@…            |       Owner:  macports-tickets@…                   
     Type:  defect                |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  1.9.2                                
 Keywords:                        |        Port:  libcanberra libgsf libnotify         
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Comment(by cubranic@…):

 Confirming that libcanberra, libgsf, and libnotify are the only remaining
 ports on my machine that link against libpng12.

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Ticket URL: <https://trac.macports.org/ticket/28029#comment:2>
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