[JAEGER] Merge from fatval branch.

js/src/jsiter.cpp

@@ -785,14 +785,11 @@ CloseGenerator(JSContext *cx, JSObject *genobj);
 #endif
 
 JS_FRIEND_API(JSBool)
-js_CloseIterator(JSContext *cx, const Value &v)
+js_CloseIterator(JSContext *cx, JSObject *obj)
 {
     cx->iterValue.setMagic(JS_NO_ITER_VALUE);
 
-    JS_ASSERT(v.isObject());
-    JSObject *obj = &v.toObject();
     Class *clasp = obj->getClass();
-
     if (clasp == &js_IteratorClass.base) {
         /* Remove enumerators from the active list, which is a stack. */
         NativeIterator *ni = obj->getNativeIterator();