Rollup merge of #80927 - LingMan:matches, r=estebank

JohnTitor · web-flow · commit 8c342da22eb7 · 2021-01-12T16:13:33.000+09:00
Replace a simple `if let` with the `matches` macro

`@rustbot` modify labels +C-cleanup +T-compiler
diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs
@@ -1947,8 +1947,7 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {
             _ => report_errors(self, None),
         };
 
-        if let PathSource::TraitItem(..) = source {
-        } else {
+        if !matches!(source, PathSource::TraitItem(..)) {
             // Avoid recording definition of `A::B` in `<T as A>::B::C`.
             self.r.record_partial_res(id, partial_res);
         }

Original file line number	Diff line number	Diff line change
`@@ -1947,8 +1947,7 @@ impl<'a: 'ast, 'b, 'ast> LateResolutionVisitor<'a, 'b, 'ast> {`
`1947`	`1947`	`_ => report_errors(self, None),`
`1948`	`1948`	`};`
`1949`	`1949`
`1950`		`- if let PathSource::TraitItem(..) = source {`
`1951`		`- } else {`
	`1950`	`+ if !matches!(source, PathSource::TraitItem(..)) {`
`1952`	`1951`	// Avoid recording definition of `A::B` in `<T as A>::B::C`.
`1953`	`1952`	`self.r.record_partial_res(id, partial_res);`
`1954`	`1953`	`}`