fixing clippy reference

src/tools/clippy/clippy_lints/src/methods/unnecessary_fold.rs

@@ -41,7 +41,7 @@ fn needs_turbofish<'tcx>(cx: &LateContext<'tcx>, expr: &hir::Expr<'tcx>) -> bool
                 if !fn_return_ty
                     .skip_binder()
                     .walk()
-                    .any(|generic| generic.as_type().is_some_and(Ty::is_impl_trait)) =>
+                    .any(|generic| generic.as_type().is_some_and(Ty::is_opaque)) =>
             {
                 return false;
             },

src/tools/clippy/clippy_lints/src/missing_const_for_fn.rs

@@ -207,7 +207,7 @@ fn fn_inputs_has_impl_trait_ty(cx: &LateContext<'_>, def_id: LocalDefId) -> bool
     inputs.iter().any(|input| {
         matches!(
             input.kind(),
-            &ty::Alias(ty::AliasTy { kind: ty::Free{def_id} , ..}) if cx.tcx.type_of(def_id).skip_binder().is_impl_trait()
+            &ty::Alias(ty::AliasTy { kind: ty::Free{def_id} , ..}) if cx.tcx.type_of(def_id).skip_binder().is_opaque()
         )
     })
 }