Small refactor of tables internals

src/model/index_counter.rs

@@ -251,13 +251,9 @@ impl<T: CountedItem> IndexCounter<T> {
 		TR: TableReplication,
 	{
 		let save_counter_entry = |entry: CounterEntry<T>| -> Result<(), Error> {
-			let entry_k = self
-				.table
-				.data
-				.tree_key(entry.partition_key(), entry.sort_key());
 			self.table
 				.data
-				.update_entry_with(&entry_k, |ent| match ent {
+				.update_entry_with(&entry.partition_key(), &entry.sort_key(), |ent| match ent {
 					Some(mut ent) => {
 						ent.merge(&entry);
 						ent

src/model/k2v/rpc.rs

@@ -273,14 +273,9 @@ impl K2VRpcHandler {
 	}
 
 	fn local_insert(&self, item: &InsertedItem) -> Result<Option<K2VItem>, Error> {
-		let tree_key = self
-			.item_table
-			.data
-			.tree_key(&item.partition, &item.sort_key);
-
 		self.item_table
 			.data
-			.update_entry_with(&tree_key[..], |ent| {
+			.update_entry_with(&item.partition, &item.sort_key, |ent| {
 				let mut ent = ent.unwrap_or_else(|| {
 					K2VItem::new(
 						item.partition.bucket_id,