fixed reliable sync, thanks Steve

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1711 01035d8c-6547-0410-b346-abe4f91aad63
Steve's patch to removed unused variables in LPC routines

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1712 01035d8c-6547-0410-b346-abe4f91aad63