WWW returning non null error in 2017; but not 5.6.3

This could be an intentional change rather than a bug; but when I do a GET using WWW the error response I used to get was NULL if it was successful and thats how I tested for errors, now on success the error is "" which could mean that there was just an error without a message.

If this is an intentional change then it's made coding with WWW a little messier since you have to do these checks after a WWW:

if (www.error == null) {
... /// Succeeded
}
else if (www.error.Length == 0) {
... /// Succeeded
}
else {
..../// Failed
}