Merged revisions 185196 via svnmerge from

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

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  r185196 | file | 2009-03-31 11:06:39 -0300 (Tue, 31 Mar 2009) | 8 lines
  
  Fix crash when moving audiohooks between channels.
  
  Handle the scenario where we are called to move audiohooks between channels
  and the source channel does not actually have any on it.
  
  (closes issue #14734)
  Reported by: corruptor
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@185197 65c4cc65-6c06-0410-ace0-fbb531ad65f3