When including 'wine/port.h', include it first.
Remove redundant 'config.h' includes.
diff --git a/windows/class.c b/windows/class.c
index 0f01e71..1ec7797 100644
--- a/windows/class.c
+++ b/windows/class.c
@@ -12,15 +12,17 @@
* classes are getting registered with wrong hInstance.
*/
+#include "wine/port.h"
+
#include <stdlib.h>
#include <string.h>
+
#include "wine/winbase16.h"
#include "winerror.h"
#include "windef.h"
#include "wingdi.h"
#include "wine/winuser16.h"
#include "wine/unicode.h"
-#include "wine/port.h"
#include "heap.h"
#include "win.h"
#include "user.h"