Merged revisions 164876 via svnmerge from

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

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r164876 | russell | 2008-12-16 15:10:44 -0600 (Tue, 16 Dec 2008) | 6 lines

Do not dereference the channel if AST_PBX_KEEPALIVE has been returned.

This is a bug I noticed while looking at the code for app_macro.  This return code
means that another thread has assumed ownership of the channel and it can no longer
be touched.  (I hate this return code with a passion, by the way.)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@164877 65c4cc65-6c06-0410-ace0-fbb531ad65f3