Blocked revisions 204012 via svnmerge

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  r204012 | mmichelson | 2009-06-29 10:04:17 -0500 (Mon, 29 Jun 2009) | 6 lines
  
  Place unlock of mutex in an else block so that it does not get unlocked twice.
  
  (closes issue #15400)
  Reported by: aragon
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@204013 65c4cc65-6c06-0410-ace0-fbb531ad65f3