#vulnerable code 
                                public void testXvideosRipper() throws IOException {
        if (false && !DOWNLOAD_CONTENT) {
            return;
        }
        List<URL> contentURLs = new ArrayList<URL>();
        contentURLs.add(new URL("http://www.xvideos.com/video1428195/stephanie_first_time_anal"));
        contentURLs.add(new URL("http://www.xvideos.com/video7136868/vid-20140205-wa0011"));
        for (URL url : contentURLs) {
            try {
                XvideosRipper ripper = new XvideosRipper(url);
                ripper.rip();
                assert(ripper.getWorkingDir().listFiles().length > 1);
                deleteDir(ripper.getWorkingDir());
            } catch (Exception e) {
                e.printStackTrace();
                fail("Error while ripping URL " + url + ": " + e.getMessage());
            }
        }
    } 
                            #location 12 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public void testXvideosRipper() throws IOException {
        if (!DOWNLOAD_CONTENT) {
            return;
        }
        List<URL> contentURLs = new ArrayList<URL>();
        contentURLs.add(new URL("http://www.xvideos.com/video1428195/stephanie_first_time_anal"));
        contentURLs.add(new URL("http://www.xvideos.com/video7136868/vid-20140205-wa0011"));
        for (URL url : contentURLs) {
            try {
                XvideosRipper ripper = new XvideosRipper(url);
                ripper.rip();
                assert(ripper.getWorkingDir().listFiles().length > 1);
                deleteDir(ripper.getWorkingDir());
            } catch (Exception e) {
                e.printStackTrace();
                fail("Error while ripping URL " + url + ": " + e.getMessage());
            }
        }
    }