review comments

src/libsyntax/parse/parser.rs

@@ -6902,7 +6902,9 @@ fn consume_block(&mut self, delim: token::DelimToken) {
         }
     }
 
-    fn parse_record_struct_body(&mut self) -> PResult<'a, (Vec<StructField>, bool)> {
+    fn parse_record_struct_body(
+        &mut self,
+    ) -> PResult<'a, (Vec<StructField>, /* recovered */ bool)> {
         let mut fields = Vec::new();
         let mut recovered = false;
         if self.eat(&token::OpenDelim(token::Brace)) {