Merged revisions 272446 via svnmerge from

Merged revisions 272446 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r272446 | rmudgett | 2010-06-24 16:58:49 -0500 (Thu, 24 Jun 2010) | 10 lines

  ss_thread calls pri_grab without lock during overlap dial

  Recent changes to chan_dahdi with relation to overlap dialing call
  pri_grab without first obtaining a lock.

  (closes issue #17414)
  Reported by: pdf
  Patches:
        bug17414.patch uploaded by jpeeler (license 325)
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@272447 65c4cc65-6c06-0410-ace0-fbb531ad65f3