[vala] gobject-2.0: ObjectClass.list_properties returns unowned elements

[Rico Tzschichholz <ricotz src gnome org>]

commit 6437f63b34cc32d90cd703cef719919e90f5508b
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Nov 22 12:12:09 2015 +0100

    gobject-2.0: ObjectClass.list_properties returns unowned elements

 vapi/gobject-2.0.vapi |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/vapi/gobject-2.0.vapi b/vapi/gobject-2.0.vapi
index 803bd59..f490901 100644
--- a/vapi/gobject-2.0.vapi
+++ b/vapi/gobject-2.0.vapi
@@ -294,7 +294,11 @@ namespace GLib {
        public class ObjectClass : TypeClass {
                public unowned ParamSpec? find_property (string property_name);
                [CCode (array_length_type = "guint")]
+#if VALA_0_26
+               public (unowned ParamSpec)[] list_properties ();
+#else
                public unowned ParamSpec[] list_properties ();
+#endif
                public void install_property (uint property_id, ParamSpec pspec);
        }