Upstream: avoid holding a cache node with upgraded connections. Holding a cache node lock doesn't make sense as we can't use caching anyway, and results in "ignore long locked inactive cache entry" alerts if a node is locked for a long time. The same is done for unbuffered connections, as they can be alive for a long time as well.

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


cat << END >> $NGX_AUTO_HEADERS_H

#ifndef $have
#define $have  1
#endif

END