uuid: Include objsafe.h.
diff --git a/dlls/uuid/uuid.c b/dlls/uuid/uuid.c
index 32f953b..4608d72 100644
--- a/dlls/uuid/uuid.c
+++ b/dlls/uuid/uuid.c
@@ -71,6 +71,7 @@
 #include "hlguids.h"
 #include "dimm.h"
 #include "isguids.h"
+#include "objsafe.h"
 
 /* FIXME: cguids declares GUIDs but does not define their values */