atom->kwindex = (kw->version <= cx->version) ? kw - keywords : -1;
atom->kwindex = (JSVERSION_IS_ECMA(cx->version) || kw->version <= cx->version) ? kw - keywords : -1;
js_InitScanner(JSContext *cx){    struct keyword *kw;    JSAtom *atom;    for (kw = keywords; kw->name; kw++) {	atom = js_Atomize(cx, kw->name, strlen(kw->name), ATOM_PINNED);	if (!atom)	    return JS_FALSE;	atom->kwindex = (kw->version <= cx->version) ? kw - keywords : -1;    }    return JS_TRUE;}