Merged revisions 67020 via svnmerge from

Merged revisions 67020 via svnmerge from
https://origsvn.digium.com/svn/asterisk/branches/1.4

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r67020 | russell | 2007-06-04 10:47:40 -0500 (Mon, 04 Jun 2007) | 7 lines

Resolve a deadlock in chan_iax2.  When handling an implicit ACK to a frame that
was marked as the final transmission for a call, don't call iax2_destroy() for
that call while the global frame queue is still locked.  There is a very nice
explanation of the deadlock in the report.
(issue #9663, thorough report and patch from stevedavies, additional positive
 test reports from mihai and joff_oconnell)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@67022 65c4cc65-6c06-0410-ace0-fbb531ad65f3