[MacPorts] #30807: lpeg: simplify setting archflags

[MacPorts]

#30807: lpeg: simplify setting archflags
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 Reporter:  ryandesign@…             |       Owner:  andremm@…        
     Type:  enhancement              |      Status:  new              
 Priority:  Normal                   |   Milestone:                   
Component:  ports                    |     Version:  2.0.1            
 Keywords:  haspatch                 |        Port:  lpeg             
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Comment(by andremm@…):

 fine with me.

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Ticket URL: <https://trac.macports.org/ticket/30807#comment:1>
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