[vala/0.50] gio-2.0: Fix DBusSubtreeIntrospectFunc binding

[Rico Tzschichholz <ricotz src gnome org>]

commit 3fc9949981aa8eb771e804b475fa87e9d3c76d4e
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Sun Jan 3 10:54:31 2021 +0100

    gio-2.0: Fix DBusSubtreeIntrospectFunc binding

 vapi/gio-2.0.vapi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/vapi/gio-2.0.vapi b/vapi/gio-2.0.vapi
index 9e2af1cf0..666c5c9f7 100644
--- a/vapi/gio-2.0.vapi
+++ b/vapi/gio-2.0.vapi
@@ -4898,9 +4898,9 @@ namespace GLib {
        [CCode (array_length = false, array_null_terminated = true, cheader_filename = "gio/gio.h", 
instance_pos = 3.9)]
        [Version (since = "2.26")]
        public delegate string[] DBusSubtreeEnumerateFunc (GLib.DBusConnection connection, string sender, 
string object_path);
-       [CCode (cheader_filename = "gio/gio.h", instance_pos = 4.9)]
+       [CCode (array_length = false, array_null_terminated = true, cheader_filename = "gio/gio.h", 
instance_pos = 4.9)]
        [Version (since = "2.26")]
-       public delegate GLib.DBusInterfaceInfo DBusSubtreeIntrospectFunc (GLib.DBusConnection connection, 
string sender, string object_path, string node);
+       public delegate GLib.DBusInterfaceInfo[]? DBusSubtreeIntrospectFunc (GLib.DBusConnection connection, 
string sender, string object_path, string node);
        [CCode (cheader_filename = "gio/gio.h", instance_pos = 2.9)]
        [Version (since = "2.48")]
        public delegate bool DatagramBasedSourceFunc (GLib.DatagramBased datagram_based, GLib.IOCondition 
condition);