prune trailing null entries in byte array

so-240258-prune-byte-array.cs

//see http://stackoverflow.com/questions/240258/removing-trailing-nulls-from-byte-array-in-c-sharp

static class ByteArrayExtensions {
    public static Byte[] Prune(this Byte[] bytes) {
        if (bytes.Length == 0) return bytes;
        var i = bytes.Length - 1;
        while (bytes[i] == 0) {
            i--;
        }
        Byte[] copy = new Byte[i + 1];
        Array.Copy(bytes, copy, i + 1);
        return copy;
    }
}

Thanks Nicholas, this is just what I needed to handle pruning a byte array.