pop first element if there is only one shape

src/physics/Body.js

@@ -1001,6 +1001,7 @@ Phaser.Physics.Body.prototype = {
         {
             var temp = [];
 
+            data = data.pop()
             //  We've a list of numbers
             for (var i = 0, len = data.shape.length; i < len; i += 2)
             {