Leak of file descriptor when creating QueueFile from corrupted queue file.

[MacSwinarski]

Leak of file descriptors in QueueFile constructor.

public QueueFile(File file) throws IOException {
    if (!file.exists()) initialize(file);
    raf = open(file);
    readHeader();
  }

When readHeader() throws and exception raf is never closed.

[MacSwinarski]

Would you accept a PR with a 1.2.4-SNAPSHOT branch with the fix?