[vala] gio-2.0: Make Action.state, state_type and parameter_type nullable

[Luca Bruno <lucabru src gnome org>]

commit 874b48c4fcc1ed9063bddc53b7757c17b97e858e
Author: Luca Bruno <lucabru src gnome org>
Date:   Thu Mar 6 21:26:59 2014 +0100

    gio-2.0: Make Action.state, state_type and parameter_type nullable
    
    Fixes bug 725367

 vapi/gio-2.0.vapi              |    6 +++---
 vapi/metadata/Gio-2.0.metadata |    6 ++++++
 2 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/vapi/gio-2.0.vapi b/vapi/gio-2.0.vapi
index 5abd09e..ea96a3b 100644
--- a/vapi/gio-2.0.vapi
+++ b/vapi/gio-2.0.vapi
@@ -2452,9 +2452,9 @@ namespace GLib {
                public static string print_detailed_name (string action_name, GLib.Variant? target_value);
                public abstract bool enabled { get; }
                public abstract string name { get; }
-               public abstract GLib.VariantType parameter_type { get; }
-               public abstract GLib.Variant state { owned get; }
-               public abstract GLib.VariantType state_type { get; }
+               public abstract GLib.VariantType? parameter_type { get; }
+               public abstract GLib.Variant? state { owned get; }
+               public abstract GLib.VariantType? state_type { get; }
        }
        [CCode (cheader_filename = "gio/gio.h", type_cname = "GActionGroupInterface", type_id = 
"g_action_group_get_type ()")]
        public interface ActionGroup : GLib.Object {
diff --git a/vapi/metadata/Gio-2.0.metadata b/vapi/metadata/Gio-2.0.metadata
index bf291b4..be625ec 100644
--- a/vapi/metadata/Gio-2.0.metadata
+++ b/vapi/metadata/Gio-2.0.metadata
@@ -50,6 +50,12 @@ dbus_* parent="GLib.DBus" name="dbus_(.*)"
 dbus_error_* parent="GLib.DBusError" name="dbus_error_(.*)"
 dbus_address_get_for_bus_sync parent="GLib.BusType" name="get_address_sync"
 
+Action
+  .parameter_type nullable
+  .state nullable
+  .state_type nullable
+PropertyAction
+  .state nullable
 ActionEntry
   .activate type="GLib.SimpleActionActivateCallback"
   .change_state type="GLib.SimpleActionChangeStateCallback"