Fix jsHint

lib/tools/phantomas/custom_modules/modules/lazyLoadableYLT/lazyLoadableYLT.js

@@ -4,11 +4,12 @@
  * @see https://github.com/macbre/phantomas/issues/494
  */
 /* global document: true, window: true */
-'use strict';
 
 exports.version = '1.0.a';
 
 exports.module = function(phantomas) {
+    'use strict';
+    
     phantomas.setMetric('lazyLoadableImagesBelowTheFold'); // @desc number of images displayed below the fold that can be lazy-loaded
 
     phantomas.on('report', function() {