Eliminate piles of extra semicolons from expanded code
Eliminate piles of extra semicolons from expanded code

Look at `cargo rustc --profile=check -- -Zunpretty=expanded` of the
following program:

    use quote::quote;
    fn main() {
        let _ = quote!(1 + 1);
    }

Before:

    use quote::quote;
    fn main() {
        let _ =
            {
                let mut _s = ::quote::__private::TokenStream::new();
                ;
                ;
                ;
                ::quote::__private::parse(&mut _s, "1");
                ;
                ::quote::__private::push_add(&mut _s);
                ;
                ::quote::__private::parse(&mut _s, "1");
                ;
                ;
                ;
                ;
                _s
            };
    }

After:

    use quote::quote;
    fn main() {
        let _ =
            {
                let mut _s = ::quote::__private::TokenStream::new();
                ::quote::__private::parse(&mut _s, "1");
                ::quote::__private::push_add(&mut _s);
                ::quote::__private::parse(&mut _s, "1");
                _s
            };
    }

dtolnay/quote