address review comments

compiler/rustc_parse/src/parser/expr.rs

@@ -3094,13 +3094,7 @@ impl<'a> Parser<'a> {
         if let Some((ident, is_raw)) = self.token.lifetime() {
             // Disallow `'fn`, but with a better error message than `expect_lifetime`.
             if matches!(is_raw, IdentIsRaw::No) && ident.without_first_quote().is_reserved() {
-                self.dcx().emit_err(errors::InvalidLabel {
-                    span: ident.span,
-                    // `IntoDiagArg` prints the symbol as if it was an ident,
-                    // so `'break` is printed as `r#break`. We don't want that
-                    // here so convert to string eagerly.
-                    name: ident.without_first_quote().name.to_string(),
-                });
+                self.dcx().emit_err(errors::KeywordLabel { span: ident.span });
             }
 
             self.bump();