Don't disable IPv6 if bulding with VS.

	When building with Cygwin or a cross-compiler there are at least 4
	functions that are not present (inet_ntop, getaddrinfo, getnameinfo and
	freeaddringo) so in these cases we just disable IPv6. Note that
	Socket.OSSupportsIPv6 will still return true.

	When building with VS, IPv6 will be supported without a problem.

diff --git a/mono/metadata/socket-io.c b/mono/metadata/socket-io.c
index 0370bede80ad63f7a2e75bb39cd0a13e8c2f5d8e..55ebd11e85f536e30720712a0d1c0af3ee92a7fe 100644 (file)
--- a/mono/metadata/socket-io.c
+++ b/mono/metadata/socket-io.c
@@ -71,7 +71,7 @@
 
 #include "mono/io-layer/socket-wrappers.h"
 
-#ifdef HOST_WIN32
+#if defined(HOST_WIN32) && !defined(_MSC_VER)
 /* This is a kludge to make this file build under cygwin:
  * w32api/ws2tcpip.h has definitions for some AF_INET6 values and
  * prototypes for some but not all required functions (notably