Regression test for bug 324688, fix Components detection

js/tests/e4x/XML/regress-324688.js

@@ -43,7 +43,7 @@ var summary = 'No Syntax Error when trailing space and XML.ignoreWhitespace true
 var actual = 'No Error';
 var expect = 'No Error';
 
-if (Components)
+if (typeof Components != 'undefined')
 {
     try
     {