Fixed header dependencies to be fully compatible with the Windows
headers (with help from Dimitrie O. Paun).

dlls/rasapi32/rasapi.c

diff --git a/dlls/rasapi32/rasapi.c b/dlls/rasapi32/rasapi.c
index 532e91c..a42c7b6 100644
--- a/dlls/rasapi32/rasapi.c
+++ b/dlls/rasapi32/rasapi.c
@@ -18,7 +18,10 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <stdarg.h>
+
 #include "windef.h"
+#include "winbase.h"
 #include "ras.h"
 #include "wine/debug.h"