Merged revisions 189391 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r189391 | dbailey | 2009-04-20 14:10:56 -0500 (Mon, 20 Apr 2009) | 4 lines
  
  Clean up problem with manager implementation of mmap where it was not testing against MAP_FAILED response.
  Got rid of shadowed variable used in processign the mmap results. 
  Change test of mmap results to compare against MAP_FAILED
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@189419 65c4cc65-6c06-0410-ace0-fbb531ad65f3