message: Fixed Signus Demo test
diff: @@ -1049,16 +1049,20 @@ fn signus_demo_works() {
  "dest":"4efZu2SXufS556yss7W5k6Po37jt4371RM4whbPKBKdB"
  }
  }"#;
  +
  + let message_ptr = message.as_bytes().as_ptr() as *const u8;
  + let message_len = message.as_bytes().len() as u32;
  +
  let err =
  indy_sign(sign_command_handle,
  their_wallet_handle,
  CString::new(their_did.clone()).unwrap().as_ptr(),
  - CString::new(message.clone()).unwrap().as_ptr(),
  + message_ptr,
  + message_len,
  sign_callback);
  assert_eq!(ErrorCode::Success, err);
  let (err, signature) = sign_receiver.recv_timeout(TimeoutUtils::long_timeout()).unwrap();
  - info!("signature {:?}", signature);
  assert_eq!(ErrorCode::Success, err);
  // 9. I Verify message
  @@ -1067,8 +1071,10 @@ fn signus_demo_works() {
  my_wallet_handle,
  1,
  CString::new(their_did).unwrap().as_ptr(),
  - CString::new(message).unwrap().as_ptr(),
  - CString::new(signature).unwrap().as_ptr(),
  + message_ptr,
  + message_len,
  + signature.as_ptr() as *const u8,
  + signature.len() as u32,
  verify_callback);
  assert_eq!(ErrorCode::Success, err);
  