d3dx9: Fix inclusions in some d3dx9 headers.
diff --git a/include/d3dx9mesh.h b/include/d3dx9mesh.h
index a85f80d..39ad28a 100644
--- a/include/d3dx9mesh.h
+++ b/include/d3dx9mesh.h
@@ -16,11 +16,11 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
+#include <d3dx9.h>
+
 #ifndef __WINE_D3DX9MESH_H
 #define __WINE_D3DX9MESH_H
 
-#include <d3dx9.h>
-
 #ifdef __cplusplus
 extern "C" {
 #endif