Memory leaks while fetching last 10 mails

[GarabaIgor]

I have simple iOS app which connect to my gmail and get last 10 emails:

private lazy var oauthswift:OAuth2Swift = {
        let tempOauthswift = OAuth2Swift(
            consumerKey:    "MY_SECRET_KEY",
            consumerSecret: "",
            authorizeUrl:   "https://accounts.google.com/o/oauth2/v2/auth",
            accessTokenUrl: "https://accounts.google.com/o/oauth2/token",//!!!!!!!!!!!!!!!!!
            responseType:   "code"
        )
        tempOauthswift.allowMissingStateCheck = true
        return tempOauthswift
    }()
    
    @IBAction func tap(_ sender: Any) {
        oauthswift.authorize(
            withCallbackURL: URL(string: "MY_CALLBACK_URL:/oauth2Callback")!,
            scope: "https://mail.google.com/", state:"",
            success:
            {
                (credential, response, parameters) in
                let configuration = Configuration.gmail(login: "[email protected]", password: .accessToken(credential.oauthToken))
                print(credential.oauthToken)
                let postal = Postal(configuration: configuration)
                postal.connect { result in
                    switch result {
                    case .success:
                        print("success")
                    case .failure(let error):
                        print("error: \(error)")
                    }
                }
                postal.fetchLast("INBOX", last: 10, flags: [.body], onMessage: { (FetchResult) in
                    print(FetchResult)
                }, onComplete: { (PostalError) in
                    print(PostalError
.debugDescription)
                })
        },
            failure:
            { error in
                print("Error: \(error.localizedDescription)")
        })
    } 

My app fetches emails successfully but Instruments shows leaks:

Any ideas?

[GarabaIgor]

Does anybody have such problem with leaks? May be I must close cfstream, but how to do it ?

[GarabaIgor]

I've returned to my old project and rebuild it with new version of postal. Memory leaks are still here. May be it's false positive leak or I do something wrong? Does anybody has such problem?