[MacPorts] #27675: libsdl_gfx: update to 2.0.22

[MacPorts]

#27675: libsdl_gfx: update to 2.0.22
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 Reporter:  ryandesign@…             |       Owner:  mww@…           
     Type:  update                   |      Status:  new             
 Priority:  Normal                   |   Milestone:                  
Component:  ports                    |     Version:  1.9.2           
 Keywords:                           |        Port:  libsdl_gfx      
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 libsdl_gfx should probably be updated to 2.0.22.

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Ticket URL: <https://trac.macports.org/ticket/27675>
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