Merged revisions 334954 via svnmerge from

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

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  r334954 | rmudgett | 2011-09-08 17:28:56 -0500 (Thu, 08 Sep 2011) | 17 lines
  
  Merged revisions 334953 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r334953 | rmudgett | 2011-09-08 17:27:40 -0500 (Thu, 08 Sep 2011) | 10 lines
    
    Fix crash with res_fax when MALLOC_DEBUG and "core stop gracefully" are used.
    
    Asterisk crashes if MALLOC_DEBUG is enabled when res_fax tries to
    unregister its logger level.
    
    * Make ast_logger_unregister_level() use ast_free() instead of free().
    When MALLOC_DEBUG is enabled, ast_free() does not degenerate into a call
    to free().  Therefore, if you allocated memory with a form of ast_malloc
    you must free it with ast_free.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@334955 65c4cc65-6c06-0410-ace0-fbb531ad65f3