Change couple of occurences of a public setUp() method to protected

Author: jakzal

src/Symfony/Bridge/Twig/Tests/AppVariableTest.php

@@ -13,7 +13,7 @@ class AppVariableTest extends \PHPUnit_Framework_TestCase
      */
     protected $appVariable;
 
-    public function setUp()
+    protected function setUp()
     {
         $this->appVariable = new AppVariable();
     }

src/Symfony/Component/DependencyInjection/Tests/Compiler/ExtensionCompilerPassTest.php

@@ -21,7 +21,7 @@ class ExtensionCompilerPassTest extends \PHPUnit_Framework_TestCase
     private $container;
     private $pass;
 
-    public function setUp()
+    protected function setUp()
     {
         $this->container = $this->getMock('Symfony\Component\DependencyInjection\ContainerBuilder');
         $this->pass = new ExtensionCompilerPass();