HTTP/3: fixed OpenSSL compatibility layer initialization. SSL context is not present if the default server has neither certificates nor ssl_reject_handshake enabled. Previously, this led to null pointer dereference before it would be caught with configuration checks. Additionally, non-default servers with distinct SSL contexts need to initialize compatibility layer in order to complete a QUIC handshake.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


have=NGX_SUPPRESS_WARN . auto/have

have=NGX_SMP . auto/have