Merged revisions 332940 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/10

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  r332940 | rmudgett | 2011-08-22 16:23:40 -0500 (Mon, 22 Aug 2011) | 14 lines
  
  Merged revisions 332939 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r332939 | rmudgett | 2011-08-22 16:22:24 -0500 (Mon, 22 Aug 2011) | 7 lines
    
    Minor code optimizations.
    
    * Simplify ast_category_browse() logic for easier understanding.
    
    * Remove dead code in ast_variable_delete() and simplify some of its
    logic.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@332941 65c4cc65-6c06-0410-ace0-fbb531ad65f3