added missing () when creating an object

tests/Silex/Tests/Provider/SerializerServiceProviderTest.php

@@ -25,7 +25,7 @@ class SerializerServiceProviderTest extends \PHPUnit_Framework_TestCase
     {
         $app = new Application();
 
-        $app->register(new SerializerServiceProvider);
+        $app->register(new SerializerServiceProvider());
 
         $this->assertInstanceOf("Symfony\Component\Serializer\Serializer", $app['serializer']);
         $this->assertTrue($app['serializer']->supportsEncoding('xml'));

tests/Silex/Tests/ServiceControllerResolverRouterTest.php

@@ -25,7 +25,7 @@ class ServiceControllerResolverRouterTest extends RouterTest
         $app = new Application();
 
         $app['service_name'] = function () {
-            return new MyController;
+            return new MyController();
         };
 
         $app->get('/bar', 'service_name:getBar');