* This functions checks whether some data has already been associated to \a host
or not and attach \a data to \a host if it is possible.
*/
-MSG_error_t MSG_host_set_data(msg_host_t host, void *data)
+msg_error_t MSG_host_set_data(msg_host_t host, void *data)
{
SIMIX_host_set_data(host->smx_host,data);