made some cosmetic changes

src/Symfony/Bundle/FrameworkBundle/HttpKernel.php

@@ -147,11 +147,11 @@ class HttpKernel extends BaseHttpKernel
                 throw new \RuntimeException(sprintf('Error when rendering "%s" (Status code is %s).', $request->getUri(), $response->getStatusCode()));
             }
 
-            if ($response instanceof StreamedResponse) {
-                $response->sendContent();
-            } else {
+            if (!$response instanceof StreamedResponse) {
                 return $response->getContent();
             }
+
+            $response->sendContent();
         } catch (\Exception $e) {
             if ($options['alt']) {
                 $alt = $options['alt'];

src/Symfony/Component/HttpFoundation/StreamedResponse.php

@@ -14,7 +14,7 @@ namespace Symfony\Component\HttpFoundation;
 /**
  * StreamedResponse represents a streamed HTTP response.
  *
- * A StreamedResponse uses a callback for its the content.
+ * A StreamedResponse uses a callback for its content.
  *
  * The callback should use the standard PHP functions like echo
  * to stream the response back to the client. The flush() method

src/Symfony/Component/Templating/EngineInterface.php

@@ -49,7 +49,7 @@ interface EngineInterface
     /**
      * Streams a template.
      *
-     * The implementation should outputs the content directly to the client.
+     * The implementation should output the content directly to the client.
      *
      * @param mixed $name       A template name or a TemplateReferenceInterface instance
      * @param array $parameters An array of parameters to pass to the template

tests/Symfony/Tests/Component/HttpFoundation/StreamedResponseTest.php

@@ -84,6 +84,6 @@ class StreamedResponseTest extends \PHPUnit_Framework_TestCase
     public function testGetContent()
     {
         $response = new StreamedResponse(function () { echo 'foo'; });
-        $this->assertEquals(false, $response->getContent());
+        $this->assertFalse($response->getContent());
     }
 }