Squash closures and jumps into a single precedence level

compiler/rustc_ast/src/ast.rs

@@ -1317,9 +1317,8 @@ impl Expr {
 
     pub fn precedence(&self) -> ExprPrecedence {
         match self.kind {
-            ExprKind::Closure(..) => ExprPrecedence::Closure,
-
             ExprKind::Break(..)
+            | ExprKind::Closure(..)
             | ExprKind::Continue(..)
             | ExprKind::Ret(..)
             | ExprKind::Yield(..)