message: Fix clippy issue after merge.
diff: @@ -287,7 +287,7 @@ impl ChainspecLoader {
  // it's not, we continue the era the highest block belongs to.
  self.initial_block_header()
  .map(BlockHeader::next_block_era_id)
  - .unwrap_or(EraId::from(0))
  + .unwrap_or_else(|| EraId::from(0))
  }
  /// Returns the era ID of where we should reset back to. This means stored blocks in that and
  