Ignore missing 'debug.file_link_formatter' service in Debug and Twig bundles

Author: mbabker

src/Symfony/Bundle/DebugBundle/Resources/config/services.xml

@@ -14,7 +14,7 @@
         <service id="data_collector.dump" class="Symfony\Component\HttpKernel\DataCollector\DumpDataCollector">
             <tag name="data_collector" id="dump" template="@Debug/Profiler/dump.html.twig" priority="240" />
             <argument type="service" id="debug.stopwatch" on-invalid="ignore" />
-            <argument type="service" id="debug.file_link_formatter"></argument>
+            <argument type="service" id="debug.file_link_formatter" on-invalid="ignore"></argument>
             <argument>%kernel.charset%</argument>
             <argument type="service" id="request_stack" />
             <argument>null</argument><!-- var_dumper.cli_dumper when debug.dump_destination is set -->

src/Symfony/Bundle/TwigBundle/Resources/config/twig.xml

@@ -88,7 +88,7 @@
 
         <service id="twig.extension.code" class="Symfony\Bridge\Twig\Extension\CodeExtension" public="false">
             <tag name="twig.extension" />
-            <argument type="service" id="debug.file_link_formatter" />
+            <argument type="service" id="debug.file_link_formatter" on-invalid="ignore" />
             <argument>%kernel.root_dir%</argument>
             <argument>%kernel.charset%</argument>
         </service>