Index: lib/interop_support.js |
diff --git a/lib/interop_support.js b/lib/interop_support.js |
index 790f8284bdbe5158035eb755bc2911eebca40770..9153f3c8105871965d835fcfb47a78dc18c5ea7b 100644 |
--- a/lib/interop_support.js |
+++ b/lib/interop_support.js |
@@ -35,7 +35,7 @@ |
var original = proto.createdCallback; |
var newCallback = function() { |
- original.call(this); |
+ if (original) original.call(this); |
var name = (this.getAttribute('is') || this.localName).toLowerCase(); |
var upgrader = upgraders[name]; |
if (upgrader) { |