Fixed "zero size buf in output" alerts. If a request had an empty request body (with Content-Length: 0), and there were preread data available (e.g., due to a pipelined request in the buffer), the "zero size buf in output" alert might be logged while proxying the request to an upstream. Similar alerts appeared with client_body_in_file_only if a request had an empty request body.

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


CFLAGS = -zq -bt=nt -bm -ot -op -oi -oe -s $(CPU_OPT)

sha1.lib:
	cd $(SHA1)
	wcl386 -c $(CFLAGS) -dL_ENDIAN sha1dgst.c
	wlib -n sha1.lib sha1dgst.obj