[glib] registrybackend: fix warning

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 56b0454ba560f693c96abe437952f19b372d90dc
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Tue Jan 26 15:41:08 2016 +0100

    registrybackend: fix warning

 gio/gregistrysettingsbackend.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gio/gregistrysettingsbackend.c b/gio/gregistrysettingsbackend.c
index bd7e8a1..f407aa6 100644
--- a/gio/gregistrysettingsbackend.c
+++ b/gio/gregistrysettingsbackend.c
@@ -1514,8 +1514,8 @@ watch_thread_handle_message (WatchThreadState *self)
 
         cache_node = g_ptr_array_index (self->cache_nodes, i);
 
-        trace ("watch thread: unsubscribe: freeing node %x, prefix %s, index %i\n",
-               (guint)cache_node, self->message.watch.prefix, i);
+        trace ("watch thread: unsubscribe: freeing node %p, prefix %s, index %i\n",
+               cache_node, self->message.watch.prefix, i);
 
         if (cache_node != NULL)
           {