Merged revisions 164351 via svnmerge from

Merged revisions 164351 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

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  r164351 | file | 2008-12-15 14:12:24 -0400 (Mon, 15 Dec 2008) | 13 lines

  Merged revisions 164350 via svnmerge from
  https://origsvn.digium.com/svn/asterisk/branches/1.4

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    r164350 | file | 2008-12-15 14:11:21 -0400 (Mon, 15 Dec 2008) | 6 lines

    Do not try to unlock a non-existant channel if the transfer fails.
    (closes issue #13800)
    Reported by: dwagner
    Patches:
          asterisk-1.4.22-chan-sip-nullp.patch uploaded by tweety (license 608)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@164352 65c4cc65-6c06-0410-ace0-fbb531ad65f3