Refactors extraction of block proposer

Author: grarco

chain/src/main.rs

@@ -286,14 +286,7 @@ async fn crawling_fn(
         namada_service::query_native_addresses_balance_change(Token::Native(
             native_token.clone(),
         ));
-    let addresses = block.addresses_with_balance_change(
-        &native_token,
-        block
-            .header
-            .proposer_address_namada
-            .as_ref()
-            .map(|address| Id::Account(address.clone())),
-    );
+    let addresses = block.addresses_with_balance_change(&native_token);
 
     let token_supplies = first_block_in_epoch
         .eq(&block_height)

shared/src/block.rs

@@ -687,7 +687,6 @@ impl Block {
     pub fn addresses_with_balance_change(
         &self,
         native_token: &Id,
-        block_proposer: Option<Id>,
     ) -> HashSet<BalanceChange> {
         self.transactions
             .iter()
@@ -712,10 +711,12 @@ impl Block {
                 // If the token is not the native one also push the balanche
                 // change of the block proposer (the balance change for the
                 // native token is pushed by default)
-                if let Some(block_proposer) = &block_proposer {
-                    if &wrapper_tx.fee.gas_token != native_token {
+                if &wrapper_tx.fee.gas_token != native_token {
+                    if let Some(block_proposer) =
+                        &self.header.proposer_address_namada
+                    {
                         balance_changes.push(BalanceChange::new(
-                            block_proposer.to_owned(),
+                            Id::Account(block_proposer.to_owned()),
                             Token::Native(wrapper_tx.fee.gas_token.clone()),
                         ));
                     }