Fix codes that fails dogfood

Author: Y-Nak

clippy_lints/src/matches.rs

@@ -922,14 +922,14 @@ fn check_wild_err_arm(cx: &LateContext<'_>, ex: &Expr<'_>, arms: &[Arm<'_>]) {
                     let mut ident_bind_name = String::from("_");
                     if !matching_wild {
                         // Looking for unused bindings (i.e.: `_e`)
-                        inner.iter().for_each(|pat| {
+                        for pat in inner.iter() {
                             if let PatKind::Binding(_, id, ident, None) = pat.kind {
                                 if ident.as_str().starts_with('_') && !LocalUsedVisitor::new(id).check_expr(arm.body) {
                                     ident_bind_name = (&ident.name.as_str()).to_string();
                                     matching_wild = true;
                                 }
                             }
-                        });
+                        }
                     }
                     if_chain! {
                         if matching_wild;