message: bugfix to get_checksum_registry
diff: @@ -283,7 +283,7 @@ where
  Some(other) => Err(execution::Error::TypeMismatch(
  StoredValueTypeMismatch::new("CLValue".to_string(), other.type_name()),
  )),
  - None => Err(execution::Error::KeyNotFound(Key::ChecksumRegistry)),
  + None => Ok(None),
  }
  }
  }
  