Remove end-byte handling to allow arbitrary padding with zeros for CBR.

From d28a530115ee7c739f12a6afb7e233cd29f64869 Mon Sep 17 00:00:00 2001
From: Timothy B. Terriberry <tterribe@xiph.org>
Date: Thu, 24 Jan 2008 21:56:48 -0500
Subject: [PATCH] Remove end-byte handling to allow arbitrary padding with zeros for CBR.