[Mutt] #3125: NULL vs. 0 cleanup

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#3125: NULL vs. 0 cleanup
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 Reporter:  ahf          |       Owner:  mutt-dev
     Type:  enhancement  |      Status:  new     
 Priority:  trivial      |   Milestone:          
Component:  mutt         |     Version:          
 Keywords:  patch        |  
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 Fairly boring NULL vs. 0 cleanup when working with pointers.

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Ticket URL: <http://dev.mutt.org/trac/ticket/3125>
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