fold_with not super_fold_with in TypeFoldable impl for Predicate

Author: jackh726

compiler/rustc_middle/src/ty/structural_impls.rs

@@ -1017,7 +1017,7 @@ impl<'tcx> TypeFoldable<'tcx> for ty::Region<'tcx> {
 
 impl<'tcx> TypeFoldable<'tcx> for ty::Predicate<'tcx> {
     fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self {
-        let new = self.inner.kind.super_fold_with(folder);
+        let new = self.inner.kind.fold_with(folder);
         folder.tcx().reuse_or_mk_predicate(self, new)
     }
 

src/test/ui/specialization/min_specialization/repeated_projection_type.stderr

@@ -1,4 +1,4 @@
-error: cannot specialize on `ForAll(Binder(ProjectionPredicate(ProjectionTy { substs: [V], item_def_id: DefId(0:6 ~ repeated_projection_type[317d]::Id::This) }, (I,))))`
+error: cannot specialize on `Binder(ProjectionPredicate(ProjectionTy { substs: [V], item_def_id: DefId(0:6 ~ repeated_projection_type[317d]::Id::This) }, (I,)))`
   --> $DIR/repeated_projection_type.rs:19:1
    |
 LL | / impl<I, V: Id<This = (I,)>> X for V {