/*
 * call-seq:
 *  str2
 *
 * Extra string information
 */
static VALUE str2(VALUE self)
{
  xmlErrorPtr error;
  Data_Get_Struct(self, xmlError, error);
  if(error->str2)
    return NOKOGIRI_STR_NEW2(error->str2, "UTF-8");
  return Qnil;
}