PW-2291: change to Integer

Author: Aleffio

src/main/java/com/adyen/httpclient/HttpURLConnectionClient.java

@@ -237,7 +237,7 @@ private String doPostRequest(HttpURLConnection httpConnection, String requestBod
         outputStream.flush();
 
         int responseCode = httpConnection.getResponseCode();
-        int[] resultOKHttpStatusCodes = {HttpURLConnection.HTTP_OK, HttpURLConnection.HTTP_ACCEPTED, HttpURLConnection.HTTP_NO_CONTENT, HttpURLConnection.HTTP_CREATED};
+        Integer[] resultOKHttpStatusCodes = {HttpURLConnection.HTTP_OK, HttpURLConnection.HTTP_ACCEPTED, HttpURLConnection.HTTP_NO_CONTENT, HttpURLConnection.HTTP_CREATED};
         if (!Arrays.asList(resultOKHttpStatusCodes).contains(responseCode)) {
             //Read the response from the error stream
             if (httpConnection.getErrorStream() != null) {