Added missing/wrong includes.

diff --git a/objects/text.c b/objects/text.c
index 37b6b9f..bf6bf2a 100644
--- a/objects/text.c
+++ b/objects/text.c
@@ -6,6 +6,8 @@
  */
 
 #include <string.h>
+
+#include "wine/winuser16.h"
 #include "winbase.h"
 #include "winuser.h"
 #include "dc.h"