or-patterns: euv/walk_arm: remove top_pats_hack.

Centril · Centril · commit d7139f3e6d9d · 2019-09-16T03:13:02.000+02:00
diff --git a/src/librustc/middle/expr_use_visitor.rs b/src/librustc/middle/expr_use_visitor.rs
@@ -784,9 +784,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {
     }
 
     fn walk_arm(&mut self, discr_cmt: mc::cmt<'tcx>, arm: &hir::Arm, mode: MatchMode) {
-        for pat in arm.top_pats_hack() {
-            self.walk_pat(discr_cmt.clone(), &pat, mode);
-        }
+        self.walk_pat(discr_cmt.clone(), &arm.pat, mode);
 
         if let Some(hir::Guard::If(ref e)) = arm.guard {
             self.consume_expr(e)

Original file line number	Diff line number	Diff line change
`@@ -784,9 +784,7 @@ impl<'a, 'tcx> ExprUseVisitor<'a, 'tcx> {`
`784`	`784`	`}`
`785`	`785`
`786`	`786`	`fn walk_arm(&mut self, discr_cmt: mc::cmt<'tcx>, arm: &hir::Arm, mode: MatchMode) {`
`787`		`- for pat in arm.top_pats_hack() {`
`788`		`- self.walk_pat(discr_cmt.clone(), &pat, mode);`
`789`		`- }`
	`787`	`+ self.walk_pat(discr_cmt.clone(), &arm.pat, mode);`
`790`	`788`
`791`	`789`	`if let Some(hir::Guard::If(ref e)) = arm.guard {`
`792`	`790`	`self.consume_expr(e)`