Fixed ticket #644 and 648 again (hopefully once and for all): build error on VS6 with built-in SDK and on PocketPC 2003 SDK since they don't have multicast related socket options
git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@2331 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjlib/include/pj/compat/os_auto.h.in b/pjlib/include/pj/compat/os_auto.h.in
index d9b37d2..8c65c8f 100644
--- a/pjlib/include/pj/compat/os_auto.h.in
+++ b/pjlib/include/pj/compat/os_auto.h.in
@@ -75,6 +75,7 @@
#undef PJ_HAS_MSWSOCK_H
#undef PJ_HAS_WINSOCK_H
#undef PJ_HAS_WINSOCK2_H
+#undef PJ_HAS_WS2TCPIP_H
#undef PJ_SOCK_HAS_INET_ATON
#undef PJ_SOCK_HAS_INET_PTON