Renamed wintypes.h to windef.h.

diff --git a/include/path.h b/include/path.h
index 3782f52..b1b31fb 100644
--- a/include/path.h
+++ b/include/path.h
@@ -7,7 +7,7 @@
 #ifndef __WINE_PATH_H
 #define __WINE_PATH_H
 
-#include "wintypes.h"
+#include "windef.h"
 
 /* It should not be necessary to access the contents of the GdiPath
  * structure directly; if you find that the exported functions don't