OSV-2021-1346 UNKNOWN READ in state_VLC_dec::load_bytes

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39046 Crash type: UNKNOWN READ Crash state: stateVLCdec::loadbytes stateVLCdec::stateVLCdec htj2kdecode...