Removes some trivial casts

admin/src/bench/mod.rs

@@ -252,8 +252,8 @@ pub fn run_internal(args: Args, db: Db) {
 		0
 	};
 
-	COMMITS.store(start_commit as usize, Ordering::SeqCst);
-	NEXT_COMMIT.store(start_commit as usize, Ordering::SeqCst);
+	COMMITS.store(start_commit, Ordering::SeqCst);
+	NEXT_COMMIT.store(start_commit, Ordering::SeqCst);
 
 	{
 		let commits = args.commits;

src/column.rs

@@ -259,13 +259,10 @@ impl Column {
 		let target_tier = tables
 			.iter()
 			.position(|t| t.value_size(key).map_or(false, |s| len <= s as usize));
-		let target_tier = match target_tier {
-			Some(tier) => tier as usize,
-			None => {
-				log::trace!(target: "parity-db", "Using blob {}", key);
-				tables.len() - 1
-			},
-		};
+		let target_tier = target_tier.unwrap_or_else(|| {
+			log::trace!(target: "parity-db", "Using blob {}", key);
+			tables.len() - 1
+		});
 
 		(result, target_tier)
 	}

src/index.rs

@@ -543,7 +543,7 @@ mod test {
 			let mut hasher = DefaultHasher::new();
 			i.hash(&mut hasher);
 			let hash = hasher.finish();
-			let entry = Entry::from_u64(hash as u64);
+			let entry = Entry::from_u64(hash);
 			IndexTable::write_entry(&entry, i, &mut chunk2);
 			*chunk = entry;
 		}