[Mutt] #3434: Mutt crashes when pressing CTRL+B on the message index.

[Mutt <fleas@xxxxxxxx>]

#3434: Mutt crashes when pressing CTRL+B on the message index.
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 Reporter:  vext01  |       Owner:  mutt-dev
     Type:  defect  |      Status:  new     
 Priority:  major   |   Milestone:          
Component:  mutt    |     Version:          
 Keywords:          |  
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 Hi,

 I accidentally pressed CTRL+B on mutt's message index and it causes a seg
 fault, every time:

 (gdb) run -F ~/.muttrc-vext01
 Starting program: /opt/mutt/bin/mutt -F ~/.muttrc-vext01
 sh: urlview: not found

 Program received signal SIGPIPE, Broken pipe.
 0x1c0cab72 in write ()

 I am using hg HEAD and OpenBSD.

 Full backtrace attached.

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Ticket URL: <http://dev.mutt.org/trac/ticket/3434>
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