winhttp: The last parameter of WinHttpQueryDataAvailable and WinHttpReadData is optional.
[wine] / dlls / vdhcp.vxd /
drwxr-xr-x   ..
-rw-r--r-- 243 Makefile.in
-rw-r--r-- 2362 vdhcp.c
-rw-r--r-- 80 vdhcp.vxd.spec