Merged revisions 339089 via svnmerge from

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

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  r339089 | may | 2011-10-03 22:52:55 +0400 (Mon, 03 Oct 2011) | 10 lines
  
  Merged revisions 339087 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r339087 | may | 2011-10-03 22:42:49 +0400 (Mon, 03 Oct 2011) | 4 lines
    
    destroy memheap mutex properly before memheap deleted
    (fix memory leak occured after r304950 changes with DEBUG_THREAD compile option)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@339091 65c4cc65-6c06-0410-ace0-fbb531ad65f3