x11: Fix Display.display_string bindings

diff --git a/vapi/x11.vapi b/vapi/x11.vapi
index c489f271b53b26896ceb25e04a74596d4c636055..950c045c2cf53642f8fd303c1ba86c6aeacde685 100644 (file)
--- a/vapi/x11.vapi
+++ b/vapi/x11.vapi
@@ -76,7 +76,7 @@ namespace X {
                public unowned Screen screen_by_id (int screen_number);
 
                [CCode (cname = "DisplayString")]
-               public string display_string ();
+               public unowned string display_string ();
 
                [CCode (cname = "XQLength")]
                public int event_queue_length ();