Rustfmt duplicate associated type bound in the presence of comment #6234

trait Foo {
    type Bar<'a>: Baz1 // 
     where Self: 'a;
}

trait Foo {
    type Bar<'a>: Baz1
    : Baz1 //
    where
        Self: 'a;
}

trait Foo {
    type Bar: Baz1 // what
    ;
}

trait Foo {
    type Bar: Baz1;
}