check length of generated data stream in io-read-single, to avoid exposing libogg to uninitialized packet data
check length of generated data stream in io-read-single, to avoid
exposing libogg to uninitialized packet data


git-svn-id: ed696e516b63563c8842837a624e30c98be77b3c@526 8158c8cd-e7e1-0310-9fa4-c5954c97daef

brion/liboggz,kfish/liboggz,brion/liboggz,brion/liboggz,kfish/liboggz,brion/liboggz,kfish/liboggz