Properly initialize value.

Change call to protected method to public one.

tests/Alchemy/Tests/Phrasea/Command/Task/TaskListTest.php

@@ -25,6 +25,6 @@ class TaskListTest extends \PhraseanetTestCase
         $application->add($command);
 
         $setupCommand = $application->find('task-manager:task:list');
-        $setupCommand->execute($input, $output);
+        $setupCommand->run($input, $output);
     }
 }