move the calls to ast_jb_configure() to before the PBX thread is started on the

channel to remove the theoretical race condition that the channel could get
bridged before the channel's jitterbuffer gets configured.  This was pointed
out by PCadach on IRC.  Thanks!


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@39964 65c4cc65-6c06-0410-ace0-fbb531ad65f3