[MacPorts] #49407: potrace @1.12_0: update to 1.13

[MacPorts]

#49407: potrace @1.12_0: update to 1.13
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 Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
     Type:  update          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.4
 Keywords:  haspatch        |       Port:  potrace
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 potrace has been updated to version 1.13:

 * Some critical bugs in the processing of BMP files were fixed. These bugs
 allowed the program to be crashed, or potentially to be abused in other
 ways, by feeding it specially crafted BMP files.

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Ticket URL: <https://trac.macports.org/ticket/49407>
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