QUIC: changed ctx->largest_ack initial value to type maximum. In particular, this prevents declaring packet number 0 as lost if there aren't yet any acknowledgements in this packet number space. For example, only Initial packets were acknowledged in handshake.

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


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  $value
#endif

END