OSV-2020-829 Heap-use-after-free in check_content_type_and_change_protocol

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23834 Crash type: Heap-use-after-free READ 2 Crash state: checkcontenttypeandchangeprotocol ndpicheckhttptcp ndpisearchhttptcp...