Fix clippy for let-else

Author: camsteffen

clippy_lints/src/non_expressive_names.rs

@@ -316,8 +316,11 @@ impl<'a, 'b> SimilarNamesLocalVisitor<'a, 'b> {
 
 impl<'a, 'tcx> Visitor<'tcx> for SimilarNamesLocalVisitor<'a, 'tcx> {
     fn visit_local(&mut self, local: &'tcx Local) {
-        if let Some(ref init) = local.init {
-            self.apply(|this| walk_expr(this, &**init));
+        if let Some((init, els)) = &local.kind.init_else_opt() {
+            self.apply(|this| walk_expr(this, init));
+            if let Some(els) = els {
+                self.apply(|this| walk_block(this, els));
+            }
         }
         // add the pattern after the expression because the bindings aren't available
         // yet in the init

clippy_utils/src/ast_utils.rs

@@ -221,7 +221,7 @@ pub fn eq_stmt(l: &Stmt, r: &Stmt) -> bool {
         (Local(l), Local(r)) => {
             eq_pat(&l.pat, &r.pat)
                 && both(&l.ty, &r.ty, |l, r| eq_ty(l, r))
-                && eq_expr_opt(&l.init, &r.init)
+                && eq_local_kind(&l.kind, &r.kind)
                 && over(&l.attrs, &r.attrs, |l, r| eq_attr(l, r))
         },
         (Item(l), Item(r)) => eq_item(l, r, eq_item_kind),
@@ -234,6 +234,16 @@ pub fn eq_stmt(l: &Stmt, r: &Stmt) -> bool {
     }
 }
 
+pub fn eq_local_kind(l: &LocalKind, r: &LocalKind) -> bool {
+    use LocalKind::*;
+    match (l, r) {
+        (Decl, Decl) => true,
+        (Init(l), Init(r)) => eq_expr(l, r),
+        (InitElse(li, le), InitElse(ri, re)) => eq_expr(li, ri) && eq_block(le, re),
+        _ => false,
+    }
+}
+
 pub fn eq_item<K>(l: &Item<K>, r: &Item<K>, mut eq_kind: impl FnMut(&K, &K) -> bool) -> bool {
     eq_id(l.ident, r.ident)
         && over(&l.attrs, &r.attrs, |l, r| eq_attr(l, r))