message: Fix bootstrap unit test.
diff: @@ -433,6 +433,8 @@ fn test_bootstrap_empty_storage_with_first_two_blocks_and_check_result_json_meta
  let max_operations_ttl = 1;
  + let predecessor_block_metadata_hash = apply_block_result.block_metadata_hash;
  +
  // apply second block - level 2
  let apply_block_result =
  apply_encoded_message(ProtocolMessage::ApplyBlockCall(ApplyBlockRequest {
  @@ -452,7 +454,7 @@ fn test_bootstrap_empty_storage_with_first_two_blocks_and_check_result_json_meta
  ),
  ),
  max_operations_ttl,
  - predecessor_block_metadata_hash: apply_block_result.block_metadata_hash,
  + predecessor_block_metadata_hash: predecessor_block_metadata_hash.clone(),
  predecessor_ops_metadata_hash: None,
  }))
  .unwrap();
  @@ -522,7 +524,7 @@ fn test_bootstrap_empty_storage_with_first_two_blocks_and_check_result_json_meta
  ),
  ),
  max_operations_ttl,
  - predecessor_block_metadata_hash: apply_block_result.block_metadata_hash,
  + predecessor_block_metadata_hash,
  predecessor_ops_metadata_hash: None,
  }))
  .unwrap();
  