drive-by: PolyExistentialPredicate

compiler/rustc_symbol_mangling/src/v0.rs

@@ -502,7 +502,7 @@ impl<'tcx> Printer<'tcx> for &mut SymbolMangler<'tcx> {
 
     fn print_dyn_existential(
         mut self,
-        predicates: &'tcx ty::List<ty::Binder<'tcx, ty::ExistentialPredicate<'tcx>>>,
+        predicates: &'tcx ty::List<ty::PolyExistentialPredicate<'tcx>>,
     ) -> Result<Self::DynExistential, Self::Error> {
         // Okay, so this is a bit tricky. Imagine we have a trait object like
         // `dyn for<'a> Foo<'a, Bar = &'a ()>`. When we mangle this, the