Merged revisions 222543 via svnmerge from

Merged revisions 222543 via svnmerge from
https://origsvn.digium.com/svn/asterisk/trunk

................
  r222543 | dvossel | 2009-10-07 12:44:52 -0500 (Wed, 07 Oct 2009) | 14 lines

  Merged revisions 222542 via svnmerge from
  https://origsvn.digium.com/svn/asterisk/branches/1.4

  ........
    r222542 | dvossel | 2009-10-07 12:41:21 -0500 (Wed, 07 Oct 2009) | 8 lines

    crash on transfer

    handle_invite_replaces() attempts to uplock a pvt's
    owner channel without first verifing that it exists.

    (issue #16027)
  ........
................

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@222545 65c4cc65-6c06-0410-ace0-fbb531ad65f3