[FrameworkBundle] Remove duplicated code in RouterDebugCommand

Author: JhonnyL

Command/RouterDebugCommand.php

@@ -83,10 +83,10 @@ protected function execute(InputInterface $input, OutputInterface $output)
 
         $name = $input->getArgument('name');
         $helper = new DescriptorHelper();
+        $routes = $this->getContainer()->get('router')->getRouteCollection();
 
         if ($name) {
-            $route = $this->getContainer()->get('router')->getRouteCollection()->get($name);
-            if (!$route) {
+            if (!$route = $routes->get($name)) {
                 throw new \InvalidArgumentException(sprintf('The route "%s" does not exist.', $name));
             }
             $this->convertController($route);
@@ -96,8 +96,6 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 'name' => $name,
             ));
         } else {
-            $routes = $this->getContainer()->get('router')->getRouteCollection();
-
             foreach ($routes as $route) {
                 $this->convertController($route);
             }