Removed extra includes from ole.h and wingdi.h.

diff --git a/objects/linedda.c b/objects/linedda.c
index 084d60c..b48c2c2 100644
--- a/objects/linedda.c
+++ b/objects/linedda.c
@@ -5,6 +5,7 @@
  */
 
 #include <stdlib.h>
+#include "windef.h"
 #include "wingdi.h"
 #include "wine/wingdi16.h"