[glib] GDBusMessage: Fix segfault if DEBUG_SERIALIZER is enabled

[Colin Walters <walters src gnome org>]

commit 59a996db9b5c987b8b2baae08dc6827aa16a9af7
Author: Lukasz Skalski <l skalski samsung com>
Date:   Wed May 7 18:09:34 2014 +0200

    GDBusMessage: Fix segfault if DEBUG_SERIALIZER is enabled
    
    https://bugzilla.gnome.org/show_bug.cgi?id=729730

 gio/gdbusmessage.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gdbusmessage.c b/gio/gdbusmessage.c
index 86bd5bf..c6c557f 100644
--- a/gio/gdbusmessage.c
+++ b/gio/gdbusmessage.c
@@ -1451,7 +1451,7 @@ parse_value_from_blob (GMemoryBuffer       *buf,
                indent, "",
                just_align ? "Aligning" : "Reading",
                s,
-               (gint) g_seekable_tell (G_SEEKABLE (buf)));
+               (gint) buf->pos);
       g_free (s);
     }
 #endif /* DEBUG_SERIALIZER */