[MacPorts] #31440: baresip: fix building on MacOSX 10.7 (Lion)

[MacPorts]

#31440: baresip: fix building on MacOSX 10.7 (Lion)
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 Reporter:  aeh@…       |       Owner:  macports-tickets@…                   
     Type:  update      |      Status:  new                                  
 Priority:  Normal      |   Milestone:                                       
Component:  ports       |     Version:  2.0.3                                
 Keywords:              |        Port:  baresip                              
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 feedback from people using Lion say that the opengl module fails to
 compile.

 the attached patch should fix that problem.

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Ticket URL: <https://trac.macports.org/ticket/31440>
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