message: use .ok()? instead of .unwrap()
diff: @@ -144,7 +144,7 @@ pub fn parse_key_from_request_for_builtin_sp(json_msg: &SJsonValue) -> Option<Ve
  trace!("TransactionHandler::parse_reply_for_builtin_sp: GET_ATTR attr_name {:?}", attr_name);
  let marker = if ProtocolVersion::is_node_1_3() { '\x01' } else { '1' };
  - let hash = openssl_hash(attr_name.as_bytes()).unwrap();
  + let hash = openssl_hash(attr_name.as_bytes()).ok()?;
  format!(":{}:{}", marker, hex::encode(hash))
  } else {
  trace!("TransactionHandler::parse_reply_for_builtin_sp: <<< GET_ATTR No key suffix");
  @@ -256,7 +256,7 @@ pub fn parse_key_from_request_for_builtin_sp(json_msg: &SJsonValue) -> Option<Ve
  let key_prefix = match type_ {
  constants::GET_NYM => {
  if let Some(dest) = dest {
  - openssl_hash(dest.as_bytes()).unwrap()
  + openssl_hash(dest.as_bytes()).ok()?
  } else {
  debug!("TransactionHandler::parse_reply_for_builtin_sp: <<< No dest");
  return None;
  