rd_kafka_conf leak

[ygrek]

  if (conf_err) {
     rd_kafka_conf_destroy(conf);
     RAISE(RD_KAFKA_CONF_RES(conf_err), "Failed to configure new kafka consumer (%s)", error_msg);
  }

  rd_kafka_t *handler = rd_kafka_new(RD_KAFKA_CONSUMER, conf, error_msg, sizeof(error_msg));
  if (handler == NULL) {
     RAISE(RD_KAFKA_RESP_ERR__FAIL, "Failed to create new kafka consumer (%s)", error_msg);
  }

this leaks rd_kafka_conf when rd_kafka_new fails

[didier-wenzek]

Thanks. I added the missing rd_kafka_conf_destroy (plus another in ocaml_kafka_new_producer).