Add dependency to mapidefs.h.



git-svn-id: svn+ssh://svn.code.sf.net/p/mingw-w64/code/trunk@275 4407c894-4637-0410-b4f5-ada5f102cad1

mingw-w64-headers/include/imessage.h

diff --git a/mingw-w64-headers/include/imessage.h b/mingw-w64-headers/include/imessage.h
index bc40c0d..f9ddc25 100644
--- a/mingw-w64-headers/include/imessage.h
+++ b/mingw-w64-headers/include/imessage.h
@@ -6,6 +6,8 @@
 #ifndef _IMESSAGE_H_
 #define _IMESSAGE_H_
 
+#include "mapidefs.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif