Fix string concatenation in loop

     * @throws IOException Connection error

     * @throws WebAuthException Authorization error

     */

    @SuppressWarnings("StringConcatenationInLoop")

    private String postWithParams(Map<String, String> params) throws IOException, WebAuthException {

        URL url = new URL(host + "/" + CLIENT_SCRIPT);

        if (Logger.DEBUG) { Log.d(TAG, "[postWithParams: " + url + " : " + params + "]"); }

        String response;

        String dataString = "";

        StringBuilder dataString = new StringBuilder();

        for (Map.Entry<String, String> p : params.entrySet()) {

            String key = p.getKey();

            String value = p.getValue();

            if (dataString.length() > 0) {

                dataString += "&";

                dataString.append("&");

            }

            dataString += URLEncoder.encode(key, "UTF-8") + "=";

            dataString += URLEncoder.encode(value, "UTF-8");

            dataString.append(URLEncoder.encode(key, "UTF-8"))

                      .append("=")

                      .append(URLEncoder.encode(value, "UTF-8"));

        }

        byte[] data = dataString.getBytes();

        byte[] data = dataString.toString().getBytes();

        HttpURLConnection connection = null;

        InputStream in = null;