OSV-2020-1864 Heap-use-after-free in grk::TileProcessor::~TileProcessor

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26008 Crash type: Heap-use-after-free READ 8 Crash state: grk::TileProcessor::TileProcessor grk::CodeStream::decompresstiles grk::CodeStream::dodecompress...

OSV-2020-1818 Use-of-uninitialized-value in grk::TileProcessor::prepare_sod_decoding

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=25798 Crash type: Use-of-uninitialized-value Crash state: grk::TileProcessor::preparesoddecoding grk::CodeStream::parsemarkers grk::CodeStream::decompresstiles...