all jspg tests now passing

src/database/formats.rs

@@ -376,7 +376,7 @@ fn check_hostname(s: &str) -> Result<(), Box<dyn Error + Send + Sync>> {
         Err("label has -- in 3rd/4th position but does not start with xn--")?;
       } else {
         let (unicode, errors) = idna::domain_to_unicode(label);
-        if let Err(_) = errors {
+        if errors.is_err() {
           Err("invalid punycode")?;
         }
         check_unicode_idn_constraints(&unicode)