diff -r 1d29d2e27590 -r 36fb36217e1d src/jdk/nashorn/internal/codegen/ObjectClassGenerator.java
--- a/src/jdk/nashorn/internal/codegen/ObjectClassGenerator.java	Fri Aug 16 13:42:44 2013 +0200
+++ b/src/jdk/nashorn/internal/codegen/ObjectClassGenerator.java	Fri Aug 16 18:51:53 2013 +0200
@@ -317,7 +317,8 @@
         final String       className    = getClassName(fieldCount);
         final String       superName    = className(ScriptObject.class);
         final ClassEmitter classEmitter = newClassEmitter(className, superName);
-        final List<String> initFields   = addFields(classEmitter, fieldCount);
+
+        addFields(classEmitter, fieldCount);
 
         final MethodEmitter init = newInitMethod(classEmitter);
         init.returnVoid();