swarm/chunk: change chunk.DefaultSize to be untyped const

swarm/chunk/chunk.go

@@ -1,5 +1,5 @@
 package chunk
 
 const (
-	DefaultSize int64 = 4096
+	DefaultSize = 4096
 )

swarm/network/stream/delivery.go

@@ -245,7 +245,7 @@ R:
 			continue R
 		default:
 		}
-		if len(req.SData) > int(cp.DefaultSize) {
+		if len(req.SData) > cp.DefaultSize {
 			log.Warn("received chunk is bigger than expected", "len", len(req.SData))
 			continue R
 		}

swarm/storage/types.go

@@ -116,7 +116,7 @@ func MakeHashFunc(hash string) SwarmHasher {
 		return func() SwarmHash {
 			hasher := sha3.NewKeccak256
 			hasherSize := hasher().Size()
-			segmentCount := int(chunk.DefaultSize) / hasherSize
+			segmentCount := chunk.DefaultSize / hasherSize
 			pool := bmt.NewTreePool(hasher, segmentCount, bmt.PoolSize)
 			return bmt.New(pool)
 		}