Don't use ast_channel_lock_both() here, it only exists in one of my branches.

This is theoretically a potential deadlock, but it's the way it was before so
I'm going to leave it this way for now.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@82776 65c4cc65-6c06-0410-ace0-fbb531ad65f3