Refactor: Simplify tx_unpacker by replacing redundant TxHash conversions with tx_hash

Author: lowhung

modules/tx_unpacker/src/tx_unpacker.rs

@@ -342,7 +342,7 @@ impl TxUnpacker {
                                         if publish_governance_procedures_topic.is_some() {
                                             if let Some(pp) = props {
                                                 // Nonempty set -- governance_message.proposal_procedures will not be empty
-                                                let mut proc_id = GovActionId { transaction_id: TxHash::from(*tx.hash()), action_index: 0 };
+                                                let mut proc_id = GovActionId { transaction_id: tx_hash, action_index: 0 };
                                                 for (action_index, pallas_governance_proposals) in pp.iter().enumerate() {
                                                     match proc_id.set_action_index(action_index)
                                                         .and_then (|proc_id| map_parameters::map_governance_proposals_procedures(proc_id, pallas_governance_proposals))
@@ -356,7 +356,7 @@ impl TxUnpacker {
                                             if let Some(pallas_vp) = votes {
                                                 // Nonempty set -- governance_message.voting_procedures will not be empty
                                                 match map_parameters::map_all_governance_voting_procedures(pallas_vp) {
-                                                    Ok(vp) => voting_procedures.push((TxHash::from(*tx.hash()), vp)),
+                                                    Ok(vp) => voting_procedures.push((tx_hash, vp)),
                                                     Err(e) => error!("Cannot decode governance voting procedures in slot {}: {e}", block.slot)
                                                 }
                                             }