Round-trip parsing for a URL string results in different outcomes

[frewsxcv]

• parsing "b:/.//" into a URL becomes "b://"
• parsing "b://" into a URL becomes "b:///"

the intermediary state here seems off to me

seems like it should go straight from"b:/.//" to "b:///"

extern crate url;

fn main() {
    let parsed = url::Url::parse("b:/.//").unwrap();
    let as_str = parsed.as_str();
    let parsed2 = url::Url::parse(as_str).unwrap();
    assert_eq!(parsed, parsed2);
}

[frewsxcv]

Found via #392

[nox]

@frewsxcv Do you remember what the spec says about this?

[nox]

Safari parses both as b://.

[qsantos]

This looks like this is the same bug as #799, which was fixed by #817. At any rate, the assertion from the code example now passes.