add explicit_iter_loop clippy lint (#8570)

Co-authored-by: Matthias Seitz <matthias.seitz@outlook.de>

crates/primitives/src/prune/mod.rs

@@ -29,7 +29,7 @@ impl ReceiptsLogPruneConfig {
     /// Example:
     ///
     /// `{ addrA: Before(872), addrB: Before(500), addrC: Distance(128) }`
-    ///  
+    ///
     ///    for `tip: 1000`, gets transformed to a map such as:
     ///
     /// `{ 500: [addrB], 872: [addrA, addrC] }`
@@ -46,7 +46,7 @@ impl ReceiptsLogPruneConfig {
         let mut map = BTreeMap::new();
         let pruned_block = pruned_block.unwrap_or_default();
 
-        for (address, mode) in self.0.iter() {
+        for (address, mode) in &self.0 {
             // Getting `None`, means that there is nothing to prune yet, so we need it to include in
             // the BTreeMap (block = 0), otherwise it will be excluded.
             // Reminder that this BTreeMap works as an inclusion list that excludes (prunes) all
@@ -75,7 +75,7 @@ impl ReceiptsLogPruneConfig {
         let pruned_block = pruned_block.unwrap_or_default();
         let mut lowest = None;
 
-        for (_, mode) in self.0.iter() {
+        for mode in self.0.values() {
             if let PruneMode::Distance(_) = mode {
                 if let Some((block, _)) =
                     mode.prune_target_block(tip, PruneSegment::ContractLogs, PrunePurpose::User)?

crates/primitives/src/request.rs

@@ -31,7 +31,7 @@ impl Encodable for Requests {
         let mut h = alloy_rlp::Header { list: true, payload_length: 0 };
 
         let mut encoded = Vec::new();
-        for req in self.0.iter() {
+        for req in &self.0 {
             let encoded_req = req.encoded_7685();
             h.payload_length += encoded_req.len();
             encoded.push(Bytes::from(encoded_req));

crates/primitives/src/transaction/pooled.rs

@@ -737,7 +737,7 @@ mod tests {
             &hex!("d30102808083c5cd02887dc5cdfd9e64fd9e407c56"),
         ];
 
-        for hex_data in input_too_short.iter() {
+        for hex_data in &input_too_short {
             let input_rlp = &mut &hex_data[..];
             let res = PooledTransactionsElement::decode(input_rlp);
 

crates/primitives/src/trie/hash_builder/state.rs

@@ -71,7 +71,7 @@ impl Compact for HashBuilderState {
 
         buf.put_u16(self.stack.len() as u16);
         len += 2;
-        for item in self.stack.iter() {
+        for item in &self.stack {
             buf.put_u16(item.len() as u16);
             buf.put_slice(&item[..]);
             len += 2 + item.len();