vbscript: Moved includes required by vbscript.h to the header.
diff --git a/dlls/vbscript/vbscript.h b/dlls/vbscript/vbscript.h
index 98a4486..29909f2 100644
--- a/dlls/vbscript/vbscript.h
+++ b/dlls/vbscript/vbscript.h
@@ -16,7 +16,15 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include <stdarg.h>
+
+#define COBJMACROS
+
+#include "windef.h"
+#include "winbase.h"
+#include "ole2.h"
 #include "activscp.h"
+
 #include "vbscript_classes.h"
 
 typedef struct {