[vala] vapi: Update GIR-based bindings

[Rico Tzschichholz <ricotz src gnome org>]

commit 7a8b118d4df947c0cca89a53700c309148eeccc7
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sat Dec 9 22:52:45 2017 +0100

    vapi: Update GIR-based bindings

 vapi/gdk-pixbuf-2.0.vapi |    2 +-
 vapi/gio-2.0.vapi        |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gdk-pixbuf-2.0.vapi b/vapi/gdk-pixbuf-2.0.vapi
index 1497ff2..54efc24 100644
--- a/vapi/gdk-pixbuf-2.0.vapi
+++ b/vapi/gdk-pixbuf-2.0.vapi
@@ -118,7 +118,7 @@ namespace Gdk {
                public async void save_to_streamv_async (GLib.OutputStream stream, string type, [CCode 
(array_length = false, array_null_terminated = true)] string[] option_keys, [CCode (array_length = false, 
array_null_terminated = true)] string[] option_values, GLib.Cancellable? cancellable = null);
                public bool savev (string filename, string type, [CCode (array_length = false, 
array_null_terminated = true)] string[] option_keys, [CCode (array_length = false, array_null_terminated = 
true)] string[] option_values) throws GLib.Error;
                public void scale (Gdk.Pixbuf dest, int dest_x, int dest_y, int dest_width, int dest_height, 
double offset_x, double offset_y, double scale_x, double scale_y, Gdk.InterpType interp_type);
-               public Gdk.Pixbuf scale_simple (int dest_width, int dest_height, Gdk.InterpType interp_type);
+               public Gdk.Pixbuf? scale_simple (int dest_width, int dest_height, Gdk.InterpType interp_type);
                [Version (since = "2.2")]
                public bool set_option (string key, string value);
                [CCode (has_construct_function = false)]
diff --git a/vapi/gio-2.0.vapi b/vapi/gio-2.0.vapi
index 2f001e5..c532271 100644
--- a/vapi/gio-2.0.vapi
+++ b/vapi/gio-2.0.vapi
@@ -1827,7 +1827,7 @@ namespace GLib {
                [HasEmitter]
                public virtual signal void reply (GLib.MountOperationResult result);
                [Version (since = "2.22")]
-               public signal void show_processes (string message, GLib.Array<GLib.Pid> processes, [CCode 
(array_length = false, array_null_terminated = true)] string[] choices);
+               public virtual signal void show_processes (string message, GLib.Array<GLib.Pid> processes, 
[CCode (array_length = false, array_null_terminated = true)] string[] choices);
                [Version (since = "2.34")]
                public virtual signal void show_unmount_progress (string message, int64 time_left, int64 
bytes_left);
        }