OSV-2018-95 Heap-use-after-free in Envoy::FakeConnectionBase::close

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8783 Crash type: Heap-use-after-free READ 1 Crash state: Envoy::FakeConnectionBase::close Envoy::Event::DispatcherImpl::runPostCallbacks eventprocessactivesinglequeue...