[MacPorts] #32469: gcc46: fix installation probrem of +cloog variant

[MacPorts]

#32469: gcc46: fix installation probrem of +cloog variant
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 Reporter:  dtakahashi42@…          |       Owner:  macports-tickets@…                   
     Type:  defect                  |      Status:  new                                  
 Priority:  Normal                  |   Milestone:                                       
Component:  ports                   |     Version:  2.0.3                                
 Keywords:                          |        Port:  gcc46                                
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 Due to the small typo in portfile, the installation of gcc46 with variant
 +cloog fails. Attached patch will fix this issue.

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Ticket URL: <https://trac.macports.org/ticket/32469>
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