From cc4ced88404d417fadb94d706b184f01d6064fbe Mon Sep 17 00:00:00 2001
From: Georg Semmler <Georg_semmler_05@web.de>
Date: Tue, 3 Dec 2019 14:07:45 +0000
Subject: [PATCH] Apply suggestions from code review

Co-Authored-By: lzutao <taolzu@gmail.com>
---
 src/librustc_lint/unused.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/librustc_lint/unused.rs b/src/librustc_lint/unused.rs
index 25c351f62348..ee644acd0997 100644
--- a/src/librustc_lint/unused.rs
+++ b/src/librustc_lint/unused.rs
@@ -357,8 +357,7 @@ impl UnusedParens {
                 if !Self::is_expr_parens_necessary(inner, followed_by_block) &&
                     value.attrs.is_empty() &&
                     !MultiSpan::from(value.span).primary_span()
-                        .map(|span| span.from_expansion())
-                        .unwrap_or(false)
+                        .map_or(false, |span| span.from_expansion())
                 {
                     let expr_text = if let Ok(snippet) = cx.sess().source_map()
                         .span_to_snippet(value.span) {