- g_return_val_if_fail (GTK_IS_STYLE_PROPERTY (property), FALSE);
- g_return_val_if_fail (value != NULL, FALSE);
- g_return_val_if_fail (parser != NULL, FALSE);
+ g_return_val_if_fail (GTK_IS_STYLE_PROPERTY (property), NULL);
+ g_return_val_if_fail (parser != NULL, NULL);