fix up test styling and add use-strict declarator

test/fixtures/syntax/property-methods-assignment/method/actual.js

@@ -1,5 +1,5 @@
 var obj = {
   method() {
-    return 5 + 5;
+  return 5 + 5;
   }
 };

test/fixtures/syntax/property-methods-assignment/method/expected.js

@@ -1,5 +1,7 @@
+"use strict";
+
 var obj = {
-  method: function () {
+  method: function() {
     return 5 + 5;
   }
-};
+};