Leaking http connection to feedback if there is error

[stari4ek]

2019-01-15 23:12:18.073 21939-22654/by.stari4ek.tvirl.debug E/HockeyApp: Failed to fetching feedback messages
    java.io.FileNotFoundException: https://sdk.hockeyapp.net/api/2/apps/<REDACTED>/feedback/<REDACTED>?last_message_id=9970624
        at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:251)
        at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getInputStream(DelegatingHttpsURLConnection.java:210)
        at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getInputStream(Unknown Source:0)
        at com.google.firebase.perf.network.zze.getInputStream(Unknown Source:58)
        at com.google.firebase.perf.network.zzd.getInputStream(Unknown Source:11)
        at net.hockeyapp.android.tasks.ConnectionTask.getStringFromConnection(ConnectionTask.java:21)
        at net.hockeyapp.android.tasks.SendFeedbackTask.doGet(SendFeedbackTask.java:359)
        at net.hockeyapp.android.tasks.SendFeedbackTask.doInBackground(SendFeedbackTask.java:141)
        at net.hockeyapp.android.tasks.SendFeedbackTask.doInBackground(SendFeedbackTask.java:34)
        at android.os.AsyncTask$2.call(AsyncTask.java:333)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at java.lang.Thread.run(Thread.java:764)

2019-01-15 23:16:53.066 21939-22322/by.stari4ek.tvirl.debug W/OkHttpClient: A connection to https://sdk.hockeyapp.net/ was leaked. Did you forget to close a response body?

Obviously the problem is with:

public abstract class ConnectionTask<Params, Progress, Result> extends AsyncTask<Params, Progress, Result> {

    protected static String getStringFromConnection(HttpURLConnection connection) throws IOException {
        InputStream inputStream = new BufferedInputStream(connection.getInputStream());
        String jsonString = Util.convertStreamToString(inputStream);
        inputStream.close();

        return jsonString;
    }
}

there is no proper resource handling for cases when there is exception raised.
Simple try with resources fixes the issue