rem: payee -> payee_description = g_strdup (description);
add: if (description) payee -> payee_description = g_strdup (description); else payee -> payee_description = NULL;
context: gboolean gsb_data_payee_set_description ( gint no_payee,				     const gchar *description ){    struct_payee *payee;    payee = gsb_data_payee_get_structure ( no_payee );    if (!payee)	return FALSE;    /* we free the last name */    if ( payee -> payee_description )	free (payee -> payee_description);        /* and copy the new one */    payee -> payee_description = g_strdup (description);    return TRUE;}