Crash in Init() in memcached.hpp

[Nono]

Memcache CopyConstructor and =operator could crash when calling init(), because servers_list could be empty, and memcached_servers_parse(servers_list.c_str()) returns NULL, then crashing inmemcached_server_free(servers):

CRASHES
<<<
void init()
  {
    memcached_server_st *servers;
    servers= memcached_servers_parse(servers_list.c_str());
    memcached_server_push(&memc, servers);
    memcached_server_free(servers);
  }
>>>

a simple if() will FIX that:
<<<
void init()
  {
    memcached_server_st *servers;
    servers= memcached_servers_parse(servers_list.c_str());
    if (servers != NULL)
    {
        memcached_server_push(&memc, servers);
        memcached_server_free(servers);
    }
  }
>>>