Regression test for bug 313799, fix typo. Thanks to Seno Aiko for the catch

js/tests/e4x/Regress/regress-313799.js

@@ -48,6 +48,6 @@ printStatus (summary);
 var val = <><t/></>.child(0);
 
 TEST(1, expect, actual);
-TEST(2, 'xml',  typeof x);
+TEST(2, 'xml',  typeof val);
 
 END();