chore: address clippy warnings

actix-web/src/helpers.rs

@@ -10,7 +10,7 @@ use bytes::BufMut;
 /// perform a remaining length check before writing.
 pub(crate) struct MutWriter<'a, B>(pub(crate) &'a mut B);
 
-impl<'a, B> io::Write for MutWriter<'a, B>
+impl<B> io::Write for MutWriter<'_, B>
 where
     B: BufMut,
 {

actix-web/src/middleware/logger.rs

@@ -704,7 +704,7 @@ impl FormatText {
 /// Converter to get a String from something that writes to a Formatter.
 pub(crate) struct FormatDisplay<'a>(&'a dyn Fn(&mut fmt::Formatter<'_>) -> Result<(), fmt::Error>);
 
-impl<'a> fmt::Display for FormatDisplay<'a> {
+impl fmt::Display for FormatDisplay<'_> {
     fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
         (self.0)(fmt)
     }

actix-web/src/types/json.rs

@@ -332,7 +332,7 @@ impl<T: DeserializeOwned> JsonBody<T> {
             (true, Ok(Some(mime))) => {
                 mime.subtype() == mime::JSON
                     || mime.suffix() == Some(mime::JSON)
-                    || ctype_fn.map_or(false, |predicate| predicate(mime))
+                    || ctype_fn.is_some_and(|predicate| predicate(mime))
             }
 
             // if content-type is expected but not parsable as mime type, bail