/*
 * call-seq:
 *   easy.local_port_range                            => fixnum or nil
 *
 * Obtain the local port range that will be used for the following +perform+
 * calls.
 *
 * This option is ignored if compiled against libcurl < 7.15.2.
 */
static VALUE ruby_curl_easy_local_port_range_get(VALUE self) {