[rygel] server: Silence DBus warning

[Jens Georg <jensgeorg src gnome org>]

commit f22ffa4a72fd1bf63f0416984997363bfe574cc5
Author: Jens Georg <jensg openismus com>
Date:   Tue Dec 18 22:29:42 2012 +0100

    server: Silence DBus warning
    
    This fixes a critical when tumbler isn't installed.

 src/librygel-server/rygel-dbus-thumbnailer.vala |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/librygel-server/rygel-dbus-thumbnailer.vala b/src/librygel-server/rygel-dbus-thumbnailer.vala
index 5c30928..db783a0 100644
--- a/src/librygel-server/rygel-dbus-thumbnailer.vala
+++ b/src/librygel-server/rygel-dbus-thumbnailer.vala
@@ -48,8 +48,7 @@ internal class Rygel.DbusThumbnailer : GLib.Object {
 
     public signal void ready (bool available);
 
-    public DbusThumbnailer (string flavor = "normal") throws GLib.IOError,
-                                                             GLib.DBusError {
+    public DbusThumbnailer (string flavor = "normal") throws GLib.Error {
         this.uris = new ArrayList<string> ();
         this.mimes = new ArrayList<string> ();
         this.timeout_id = 0;