From 1fb0ed0e2ce788d8f69969bdb81967ca3c9a7f26 Mon Sep 17 00:00:00 2001
From: Ivan Tham <pickfire@riseup.net>
Date: Fri, 10 Jul 2020 15:36:02 +0800
Subject: [PATCH] Minor refactor for rustc_resolve diagnostics match

Use `matches!` instead of old `if let`
---
 src/librustc_resolve/late/diagnostics.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/librustc_resolve/late/diagnostics.rs b/src/librustc_resolve/late/diagnostics.rs
index e469ca80c590a..e26ff13f5c93b 100644
--- a/src/librustc_resolve/late/diagnostics.rs
+++ b/src/librustc_resolve/late/diagnostics.rs
@@ -100,9 +100,7 @@ impl<'a> LateResolutionVisitor<'a, '_, '_> {
         let ident_span = path.last().map_or(span, |ident| ident.ident.span);
         let ns = source.namespace();
         let is_expected = &|res| source.is_expected(res);
-        let is_enum_variant = &|res| {
-            if let Res::Def(DefKind::Variant, _) = res { true } else { false }
-        };
+        let is_enum_variant = &|res| matches!(res, Res::Def(DefKind::Variant, _));
 
         // Make the base error.
         let expected = source.descr_expected();