Renamed wintypes.h to windef.h.

multimedia/mmio.c

diff --git a/multimedia/mmio.c b/multimedia/mmio.c
index 882f610..2f506ea 100644
--- a/multimedia/mmio.c
+++ b/multimedia/mmio.c
@@ -10,7 +10,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
-#include "wintypes.h"
+#include "windef.h"
 #include "wine/winbase16.h"
 #include "heap.h"
 #include "file.h"