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 = -q -O2 -tWM $(CPU_OPT) -DL_ENDIAN

!if "$(MD5_ASM)" == "YES"

md5.lib:
	cd $(MD5)
	bcc32 -c $(CFLAGS) -DMD5_ASM md5_dgst.c
	tlib md5.lib +md5_dgst.obj +"asm\m-win32.obj"

!else

md5.lib:
	cd $(MD5)
	bcc32 -c $(CFLAGS) md5_dgst.c
	tlib md5.lib +md5_dgst.obj

!endif