[vala/staging] gtk+-3.0: Fix cheader_filename of Plug and Socket

[Rico Tzschichholz <ricotz src gnome org>]

commit 272b41781d028ecd8e6b90bcb7eb2f6aa4b0f512
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Jan 20 12:32:29 2018 +0100

    gtk+-3.0: Fix cheader_filename of Plug and Socket
    
    Regression of a8e6aff63e5e1502290ba93398314acf2ad45b60

 vapi/gtk+-3.0.vapi             |    4 ++--
 vapi/metadata/Gtk-3.0.metadata |    2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gtk+-3.0.vapi b/vapi/gtk+-3.0.vapi
index dc39d56..2f6fe3d 100644
--- a/vapi/gtk+-3.0.vapi
+++ b/vapi/gtk+-3.0.vapi
@@ -5572,7 +5572,7 @@ namespace Gtk {
                [Version (since = "3.20")]
                public signal void unmount (GLib.MountOperation mount_operation);
        }
-       [CCode (cheader_filename = "gtk/gtk.h", type_id = "gtk_plug_get_type ()")]
+       [CCode (cheader_filename = "gtk/gtkx.h", type_id = "gtk_plug_get_type ()")]
        public class Plug : Gtk.Window, Atk.Implementor, Gtk.Buildable {
                [CCode (has_construct_function = false, type = "GtkWidget*")]
                public Plug (X.Window socket_id);
@@ -7032,7 +7032,7 @@ namespace Gtk {
                public bool ignore_hidden { get; set; }
                public Gtk.SizeGroupMode mode { get; set; }
        }
-       [CCode (cheader_filename = "gtk/gtk.h", type_id = "gtk_socket_get_type ()")]
+       [CCode (cheader_filename = "gtk/gtkx.h", type_id = "gtk_socket_get_type ()")]
        public class Socket : Gtk.Container, Atk.Implementor, Gtk.Buildable {
                [CCode (has_construct_function = false, type = "GtkWidget*")]
                public Socket ();
diff --git a/vapi/metadata/Gtk-3.0.metadata b/vapi/metadata/Gtk-3.0.metadata
index 3c1df80..6b7af17 100644
--- a/vapi/metadata/Gtk-3.0.metadata
+++ b/vapi/metadata/Gtk-3.0.metadata
@@ -6,6 +6,8 @@
 * cheader_filename="gtk/gtk.h"
 *Accessible cheader_filename="gtk/gtk.h,gtk/gtk-a11y.h"
 IMContext cheader_filename="gtk/gtk.h,gtk/gtkimmodule.h"
+Plug cheader_filename="gtk/gtkx.h"
+Socket cheader_filename="gtk/gtkx.h"
 
 // Causes vapigen issues, not sure why -- <union> without name