OSV-2023-838 Use-of-uninitialized-value in wabt::BinaryReaderIR::OnOpcode

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=62267 Crash type: Use-of-uninitialized-value Crash state: wabt::BinaryReaderIR::OnOpcode wabt::BinaryReader::ReadInstructions wabt::ReadBinary...