Merge pull request #490 from jsoverson/phantomjs2-support

Bypassing element wrapping for elements that do not exist

Author: arv

src/wrappers/HTMLAudioElement.js

@@ -12,6 +12,8 @@
 
   var OriginalHTMLAudioElement = window.HTMLAudioElement;
 
+  if (!OriginalHTMLAudioElement) return;
+
   function HTMLAudioElement(node) {
     HTMLMediaElement.call(this, node);
   }

src/wrappers/HTMLMediaElement.js

@@ -10,6 +10,8 @@
 
   var OriginalHTMLMediaElement = window.HTMLMediaElement;
 
+  if (!OriginalHTMLMediaElement) return;
+
   function HTMLMediaElement(node) {
     HTMLElement.call(this, node);
   }