Use pred not binder

Author: jackh726

src/tools/clippy/clippy_lints/src/needless_pass_by_value.rs

@@ -117,7 +117,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue {
                 // Note that we do not want to deal with qualified predicates here.
                 let binder = obligation.predicate.bound_atom();
                 match binder.skip_binder() {
-                    ty::PredicateAtom::Trait(pred, _) if !binder.has_escaping_bound_vars() => {
+                    ty::PredicateAtom::Trait(pred, _) if !pred.has_escaping_bound_vars() => {
                         if pred.def_id() == sized_trait {
                             return None;
                         }