Fix clippy for Rust 1.84.0

src/oracle.rs

@@ -251,7 +251,7 @@ impl SerializableSnapshotIsolation {
                         Some(entries)
                             if entries
                                 .last()
-                                .map_or(false, |e| e.e.is_deleted_or_tombstone()) =>
+                                .is_some_and(|e| e.e.is_deleted_or_tombstone()) =>
                         {
                             // Key is being deleted in current txn, don't count as conflict
                             continue;

src/reader.rs

@@ -255,10 +255,7 @@ impl RecordReader {
         self.rec.clear();
 
         let mut tx = Record::new();
-        match self.read_into(&mut tx) {
-            Ok(value_offsets) => value_offsets,
-            Err(e) => return Err(e),
-        };
+        self.read_into(&mut tx)?;
 
         let mut rec = BytesMut::new();
         tx.encode(&mut rec)?;

src/store.rs

@@ -454,7 +454,7 @@ impl Core {
         value_offset: u64,
         indexer: &mut Indexer,
     ) -> Result<()> {
-        if entry.metadata.as_ref().map_or(false, |metadata| {
+        if entry.metadata.as_ref().is_some_and(|metadata| {
             metadata.is_deleted() || metadata.is_tombstone() && !opts.enable_versions
         }) {
             indexer.delete(&mut entry.key[..].into());

src/transaction.rs

@@ -873,7 +873,7 @@ impl Transaction {
         // Iterate over the keys in the range.
         for (key, value, _, ts) in ranger {
             // If the key changes, process the previous key's versions.
-            if current_key.as_ref().map_or(false, |k| k != &key) {
+            if current_key.as_ref().is_some_and(|k| k != &key) {
                 // Add the previous key's versions to the results.
                 results.append(&mut current_key_versions);