Call object_properties_init on newly created V8Js object.

v8js.cc

@@ -534,6 +534,9 @@ static zend_object_value php_v8js_new(zend_class_entry *ce TSRMLS_DC) /* {{{ */
 
 	c = (php_v8js_ctx *) ecalloc(1, sizeof(*c));
 	zend_object_std_init(&c->std, ce TSRMLS_CC);
+#if PHP_VERSION_ID >= 50400
+	object_properties_init(&c->std, ce);
+#endif
 
 	retval.handle = zend_objects_store_put(c, NULL, (zend_objects_free_object_storage_t) php_v8js_free_storage, NULL TSRMLS_CC);
 	retval.handlers = &v8js_object_handlers;