OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33315
Crash type: Heap-use-after-free READ 8
Crash state:
std::__1::__tree_iterator<std::__1::__value_type<std::__1::basic_string<char, st
draco::Metadata::AddSubMetadata
draco::MetadataDecoder::DecodeMetadata