Fixed Win32 includes.

stdc.mod/stdc.c

@@ -12,7 +12,8 @@
 
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
-#include <winsock.h>
+#include <winsock2.h>
+#include <ws2tcpip.h>
 
 extern int _bbusew;