Merged revisions 189463 via svnmerge from

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

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  r189463 | twilson | 2009-04-20 16:00:52 -0500 (Mon, 20 Apr 2009) | 2 lines
  
  Don't treat a NOANSWER like a CHANUNAVAIL
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@189495 65c4cc65-6c06-0410-ace0-fbb531ad65f3