**/
if (memcached_is_udp(ptr->root) and with_flush and ptr->write_buffer_offset > UDP_DATAGRAM_HEADER_LENGTH)
{
- if (memcached_io_write(ptr, NULL, 0, true) == -1)
+ if (memcached_io_write(ptr) == false)
{
memcached_io_reset(ptr);
return memcached_set_error(*ptr, MEMCACHED_WRITE_FAILURE, MEMCACHED_AT);