[glib] tests: Add a debug message to gdbus-peer test

[Philip Withnall <pwithnall src gnome org>]

commit 22b224862cd1f99be4d81e389a82d9806256b964
Author: Philip Withnall <withnall endlessm com>
Date:   Mon Feb 19 11:11:36 2018 +0000

    tests: Add a debug message to gdbus-peer test
    
    This might help diagnose the CI test failure here:
    https://gitlab.gnome.org/GNOME/glib/-/jobs/8222
    
    Signed-off-by: Philip Withnall <withnall endlessm com>
    Reviewed-by: nobody

 gio/tests/gdbus-peer.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gio/tests/gdbus-peer.c b/gio/tests/gdbus-peer.c
index b4169ab9a..be2d057b2 100644
--- a/gio/tests/gdbus-peer.c
+++ b/gio/tests/gdbus-peer.c
@@ -1682,6 +1682,7 @@ codegen_test_peer (void)
                                   NULL, &error);
   g_assert_no_error (error);
   g_variant_get (value, "(&s)", &s);
+  g_test_message ("Machine ID: %s", s);
   g_assert (g_dbus_is_guid (s));
   g_variant_unref (value);