Upstream: fixed cache revalidation with SSI. Previous code in ngx_http_upstream_send_response() used last modified time from r->headers_out.last_modified_time after the header filter chain was already called. At this point, last_modified_time may be already cleared, e.g., with SSI, resulting in incorrect last modified time stored in a cache file. Fix is to introduce u->headers_in.last_modified_time instead.

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


# aCC: HP ANSI C++ B3910B A.03.55.02

# C89 mode

CFLAGS="$CFLAGS -Ae"
CC_TEST_FLAGS="-Ae"

PCRE_OPT="$PCRE_OPT -Ae"
ZLIB_OPT="$ZLIB_OPT -Ae"
MD5_OPT="$MD5_OPT -Ae"