memory leaks

[a72]

This code causes a memory leak.
If I use JSON decoder then there is no memory leak.
Any idea how to fix this?

import Foundation
import CSV

typealias  TestCodable = Test & Codable

protocol Test {
    func baz()
}

struct Product1:TestCodable {
    var title:String
    var price:Int
    var quantity:Int
    func baz() {
        print(title)
    }
}

let csv = """
title,price,quantity
Nike,10,1
Nike1,11,1
Nike2,12,1
Nike3,13,1
Nike4,13,1
Nike5,13,1
Nike6,13,1
"""

let json = """
{
"title": "Nike",
"price": 10,
"quantity": 1
}
"""
let data = json.data(using: .utf8)!
var arrayProduct: [Test] = []
let reader = try CSVReader(string: csv, hasHeaderRow: true)
let decoder = CSVRowDecoder()

while reader.next() != nil {
//    let product: Product1 = try! JSONDecoder().decode(Product1.self, from: data)
    let product = try! decoder.decode(Product1.self, from: reader)
    arrayProduct.append(product)
    print("\(product)")
    sleep(4)
}

[a72]

[a72]

swift 5 solved the problem