[Mutt] #3123: [patch] make mutt build with without HAVE_LIBIDN

[Mutt <fleas@xxxxxxxx>]

#3123: [patch] make mutt build with without HAVE_LIBIDN
-----------------------------+----------------------------------------------
 Reporter:  gp               |       Owner:  mutt-dev
     Type:  defect           |      Status:  new     
 Priority:  major            |   Milestone:          
Component:  mutt             |     Version:          
 Keywords:  compilation fix  |  
-----------------------------+----------------------------------------------
 mutt_idna.o: In function `mutt_addr_for_display':
 /home/gregory/dev/mutt/mutt_idna.c:248: undefined reference to `check_idn'
 mutt_idna.o: In function `mutt_addrlist_to_local':
 /home/gregory/dev/mutt/mutt_idna.c:219: undefined reference to `check_idn'
 collect2: ld returned 1 exit status

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Ticket URL: <http://dev.mutt.org/trac/ticket/3123>
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