Merged revisions 119156 via svnmerge from

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

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r119156 | russell | 2008-05-29 17:24:29 -0500 (Thu, 29 May 2008) | 10 lines

Fix a race condition in channel autoservice.  There was still a small window of opportunity
for a DTMF frame, or some other deferred frame type, to come in and get dropped.

(closes issue #12656)
(closes issue #12656)
Reported by: dimas
Patches:
      v3-12656.patch uploaded by dimas (license 88)
	  -- with some modifications by me

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@119157 65c4cc65-6c06-0410-ace0-fbb531ad65f3