Merged revisions 189277 via svnmerge from

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

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  r189277 | mmichelson | 2009-04-20 09:04:41 -0500 (Mon, 20 Apr 2009) | 12 lines
  
  Move the check for chan->fdno == -1 to after the zombie/hangup check.
  
  Many users were finding that their hung up channels were staying up and
  causing 100% CPU usage.
  
  (issue #14723)
  Reported by: seadweller
  Patches:
        14723_1-4-tip.patch uploaded by mmichelson (license 60)
  Tested by: falves11, bamby
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@189278 65c4cc65-6c06-0410-ace0-fbb531ad65f3