Actually keep the cursor on the right terminal side

[sigmaSd]

Test case:

use indicatif::{ProgressBar, ProgressStyle};

fn main() {
    let pb = ProgressBar::new(500).with_style(ProgressStyle::default_bar().template("hello {bar}"));
    for _ in 0..1024 {
        pb.inc(1);
    }
    pb.finish_with_message("done");
    println!("Something");
}

1b13d6f didn't actually work as you can see with the test case, apparently moving the cursor to the right will never reach the last column, writing spaces instead actually works

[djc]

Thanks for fixing it!