Reverted some of Timothy's changes to the range decoding that were causing...

Reverted some of Timothy's changes to the range decoding that were causing decode random decode problems at the end of the stream (but only once in a while).

git-svn-id: http://svn.xiph.org/trunk/ghost@14413 0101bb08-14d6-0310-b084-bc0e0c8e3800