[MacPorts] #30685: update lftp to 4.3.1

[MacPorts]

#30685: update lftp to 4.3.1
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 Reporter:  jinxiaoyong@…          |       Owner:  macports-tickets@…                   
     Type:  update                 |      Status:  new                                  
 Priority:  Normal                 |   Milestone:                                       
Component:  ports                  |     Version:  2.0.1                                
 Keywords:                         |        Port:  lftp                                 
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 Straightforward upgrade lftp to 4.3.1.  Please see the attached patch.

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Ticket URL: <https://trac.macports.org/ticket/30685>
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