Merged revisions 122259 via svnmerge from

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

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r122259 | russell | 2008-06-12 13:22:44 -0500 (Thu, 12 Jun 2008) | 3 lines

Fix some race conditions that cause ast_assert() to report that chan_iax2 tried
to remove an entry that wasn't in the scheduler

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@122262 65c4cc65-6c06-0410-ace0-fbb531ad65f3