OSV-2018-175 Heap-buffer-overflow in rawspeed::VC5Decompressor::Wavelet::HighPassBand::decode

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11429 Crash type: Heap-buffer-overflow WRITE 2 Crash state: rawspeed::VC5Decompressor::Wavelet::HighPassBand::decode rawspeed::VC5Decompressor::decode VC5Decompressor.cpp...