Merge pull request #56 from xabbuh/excluded-404s-single-xml-value

fix config to work with exactly one value for excluded_404s in XML forma...

Author: Seldaek

DependencyInjection/Configuration.php

@@ -196,6 +196,7 @@ public function getConfigTreeBuilder()
                     ->useAttributeAsKey('name')
                     ->prototype('array')
                         ->fixXmlConfig('member')
+                        ->fixXmlConfig('excluded_404')
                         ->canBeUnset()
                         ->children()
                             ->scalarNode('type')