OSV-2021-1080 Use-after-poison in AK::RefPtr<AK::StringImpl, AK::RefPtrTraits<AK::StringImpl> >::RefPtr

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36706 Crash type: Use-after-poison WRITE 8 Crash state: AK::RefPtr ::RefPtr AK::String::String JS::abstractrelation...