Merged revisions 114063 via svnmerge from

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

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r114063 | mmichelson | 2008-04-11 10:44:28 -0500 (Fri, 11 Apr 2008) | 11 lines

Fix a race condition that may happen between a sip hangup
and a "core show channel" command. This patch adds locking
to prevent the resulting crash.

(closes issue #12155)
Reported by: tsearle
Patches:
      show_channels_crash2.patch uploaded by tsearle (license 373)
Tested by: tsearle


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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@114064 65c4cc65-6c06-0410-ace0-fbb531ad65f3