OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24051
Crash type: UNKNOWN READ
Crash state:
std::__1::__tree<std::__1::__value_type<std::__1::basic_string<char, std::__1::c
std::__1::pair<std::__1::__tree_iterator<std::__1::__value_type<std::__1::basic_
std::__1::map<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1