Merged revisions 73598 via svnmerge from

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

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r73598 | russell | 2007-07-05 18:59:22 -0500 (Thu, 05 Jul 2007) | 3 lines

Fix a crash in chan_sip.  Don't try to stop the monitor thread if it was never
started.  (closes issue #10124, reported by gzero, fixed by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@73599 65c4cc65-6c06-0410-ace0-fbb531ad65f3