Fix rebase issues with existential types

Author: varkor

src/librustc/hir/intravisit.rs

@@ -511,7 +511,7 @@ pub fn walk_item<'v, V: Visitor<'v>>(visitor: &mut V, item: &'v Item) {
         ItemExistential(ExistTy {ref generics, ref bounds, impl_trait_fn}) => {
             visitor.visit_id(item.id);
             walk_generics(visitor, generics);
-            walk_list!(visitor, visit_ty_param_bound, bounds);
+            walk_list!(visitor, visit_param_bound, bounds);
             if let Some(impl_trait_fn) = impl_trait_fn {
                 visitor.visit_def_mention(Def::Fn(impl_trait_fn))
             }

src/librustc/hir/lowering.rs

@@ -1165,7 +1165,7 @@ impl<'a> LoweringContext<'a> {
                         self.allocate_hir_id_counter(exist_ty_node_id, t);
 
                         let hir_bounds = self.with_hir_id_owner(exist_ty_node_id, |lctx| {
-                            lctx.lower_bounds(bounds, itctx)
+                            lctx.lower_param_bounds(bounds, itctx)
                         });
 
                         let (lifetimes, lifetime_defs) = self.lifetimes_from_impl_trait_bounds(

src/librustc/hir/print.rs

@@ -662,7 +662,7 @@ impl<'a> State<'a> {
                 self.word_space(":")?;
                 let mut real_bounds = Vec::with_capacity(exist.bounds.len());
                 for b in exist.bounds.iter() {
-                    if let TraitTyParamBound(ref ptr, hir::TraitBoundModifier::Maybe) = *b {
+                    if let GenericBound::Trait(ref ptr, hir::TraitBoundModifier::Maybe) = *b {
                         self.s.space()?;
                         self.word_space("for ?")?;
                         self.print_trait_ref(&ptr.trait_ref)?;