OSV-2020-173 Use-of-uninitialized-value in BaseCryptStream::BaseCryptStream

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20200 Crash type: Use-of-uninitialized-value Crash state: BaseCryptStream::BaseCryptStream DecryptStream::DecryptStream Parser::getObj...