Porting fixes.

diff --git a/windows/winpos.c b/windows/winpos.c
index 60c3a36..e0fce4a 100644
--- a/windows/winpos.c
+++ b/windows/winpos.c
@@ -19,6 +19,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <stdarg.h>
 #include <string.h>
 #include "winerror.h"