src : tidy up padding in offset

jquery.isotope.js

@@ -1,5 +1,5 @@
 /**
- * Isotope v1.5.16
+ * Isotope v1.5.17
  * An exquisite jQuery plugin for magical layouts
  * http://isotope.metafizzy.co
  *
@@ -395,12 +395,9 @@
       this.reloadItems();
 
       // get top left position of where the bricks should be
-      var _paddingLeft = this.element.css('padding-left');
-      var _paddingTop = this.element.css('padding-top');
-      
       this.offset = {
-        left: parseInt( (_paddingLeft ? _paddingLeft : 0), 10 ),
+        left: parseInt( ( this.element.css('padding-left') || 0 ), 10 ),
-        top: parseInt( (_paddingTop ? _paddingTop : 0), 10 )
+        top: parseInt( ( this.element.css('padding-top') || 0 ), 10 )
       };
 
       // add isotope class first time around