Support literals in const generics without a block
diff --git a/src/gen/visit.rs b/src/gen/visit.rs
index b91254f..e9f99e3 100644
--- a/src/gen/visit.rs
+++ b/src/gen/visit.rs
@@ -1156,7 +1156,7 @@
             _visitor.visit_type_binding(&* _binding_0);
         }
         Const(ref _binding_0, ) => {
-            full!(_visitor.visit_expr_block(&* _binding_0));
+            _visitor.visit_expr(&* _binding_0);
         }
     }
 }