Address code review

src/from_bytes.rs

@@ -38,30 +38,23 @@ where
     E: EncodingSupport,
 {
     // https://drafts.csswg.org/css-syntax/#the-input-byte-stream
-    match protocol_encoding_label {
-        None => (),
-        Some(label) => match E::from_label(label) {
-            None => (),
-            Some(protocol_encoding) => return protocol_encoding,
-        },
-    }
+    if let Some(label) = protocol_encoding_label {
+        if let Some(protocol_encoding) = E::from_label(label) {
+            return protocol_encoding;
+        };
+    };
+
     let prefix = b"@charset \"";
     if css.starts_with(prefix) {
         let rest = &css[prefix.len()..];
-        match rest.iter().position(|&b| b == b'"') {
-            None => (),
-            Some(label_length) => {
-                if rest[label_length..].starts_with(b"\";") {
-                    let label = &rest[..label_length];
-                    match E::from_label(label) {
-                        None => (),
-                        Some(charset_encoding) => {
-                            if E::is_utf16_be_or_le(&charset_encoding) {
-                                return E::utf8();
-                            } else {
-                                return charset_encoding;
-                            }
-                        }
+        if let Some(label_length) = rest.iter().position(|&b| b == b'"') {
+            if rest[label_length..].starts_with(b"\";") {
+                let label = &rest[..label_length];
+                if let Some(charset_encoding) = E::from_label(label) {
+                    if E::is_utf16_be_or_le(&charset_encoding) {
+                        return E::utf8();
+                    } else {
+                        return charset_encoding;
                     }
                 }
             }

src/parser.rs

@@ -354,9 +354,7 @@ impl<'i: 't, 't> Parser<'i, 't> {
                 ..
             }) => Ok(()),
             Err(e) => unreachable!("Unexpected error encountered: {:?}", e),
-            Ok(t) => Err(start
-                .source_location()
-                .new_basic_unexpected_token_error(t.clone())),
+            Ok(t) => Err(start.source_location().new_basic_unexpected_token_error(t.clone())),
         };
         self.reset(&start);
         result