Fixed an error when a comment is in an attribute.

[KalitaAlexey]

Maintainers of Visual Studio Code asked me to open this PR.
The PR in Visual Studio Code's repository: microsoft/vscode#19574

It fixes the case:

#[
//
/* */
derive(Debug)]
struct D {}

[KalitaAlexey]

This comment is hint for me.

There is also problem with a function call parameterized with some type:

fn main() {
    collect();
    collect::<Vec<_>>();
}

Unfortunately, I have no idea how to fix it.

[KalitaAlexey]

@zargony,
Are you still maintaining the repository?

[zargony]

Thanks for the PR and sorry for the delay. (Unfortunately I currently don't get much free time and my main work sadly doesn't involve Rust at the moment) You seem pretty active with Rust projects, would you like to help out maintaining this plugin?

[KalitaAlexey]

Hi @zargony,
I would be glad to help.
Write me a message to the email: kalita.alexey@outlook.com