Merged revisions 107158 via svnmerge from

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

........
r107158 | russell | 2008-03-10 15:04:27 -0500 (Mon, 10 Mar 2008) | 9 lines

Fix some bugs related to originating calls.  If the code failed to start a PBX
on the channel (such as if you set a call limit based on the system's load
average), then there were cases where a channel that has already been free'd
using ast_hangup() got accessed.  This caused weird memory corruption and
crashes to occur.

(fixes issue BE-386)
(much debugging credit goes to twilson, final patch written by me)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@107159 65c4cc65-6c06-0410-ace0-fbb531ad65f3