Remove unnecessary default value

fabiocarneiro · weierophinney · commit 976672a1cfb7 · 2016-08-29T13:28:43.000-05:00
diff --git a/src/Application.php b/src/Application.php
@@ -94,7 +94,7 @@ class Application implements
     /**
      * @var ServiceManager
      */
-    protected $serviceManager = null;
+    protected $serviceManager;
 
     /**
      * Constructor
