Add ErrorGuaranteed to ast::ExprKind::Err

Author: ShE3py

clippy_utils/src/ast_utils.rs

@@ -143,7 +143,7 @@ pub fn eq_expr(l: &Expr, r: &Expr) -> bool {
  match (&l.kind, &r.kind) {
  (Paren(l), _) => eq_expr(l, r),
  (_, Paren(r)) => eq_expr(l, r),
- (Err, Err) => true,
+ (Err(_), Err(_)) => true,
  (Dummy, _) | (_, Dummy) => unreachable!("comparing `ExprKind::Dummy`"),
  (Try(l), Try(r)) | (Await(l, _), Await(r, _)) => eq_expr(l, r),
  (Array(l), Array(r)) => over(l, r, |l, r| eq_expr(l, r)),

clippy_utils/src/sugg.rs

@@ -222,7 +222,7 @@ impl<'a> Sugg<'a> {
  | ast::ExprKind::Array(..)
  | ast::ExprKind::While(..)
  | ast::ExprKind::Await(..)
- | ast::ExprKind::Err
+ | ast::ExprKind::Err(_)
  | ast::ExprKind::Dummy => Sugg::NonParen(snippet_with_context(cx, expr.span, ctxt, default, app).0),
  ast::ExprKind::Range(ref lhs, ref rhs, RangeLimits::HalfOpen) => Sugg::BinOp(
  AssocOp::DotDot,