Small tweaks

Author: Tinche

src/cattr/dispatch.py

@@ -49,7 +49,7 @@ def _dispatch(self, cl):
         return self._function_dispatch.dispatch(cl)
 
     def register_cls_list(self, cls_and_handler, direct: bool = False):
-        """register a class to direct or singledispatch"""
+        """Register a class to direct or singledispatch."""
         for cls, handler in cls_and_handler:
             if direct:
                 self._direct_dispatch[cls] = handler

src/cattrs/gen.py

@@ -379,13 +379,12 @@ def make_dict_structure_fn(
             else:
                 handler = converter.structure
 
-            struct_handler_name = f"__c_structure_{an}"
-            internal_arg_parts[struct_handler_name] = handler
-
             kn = an if override.rename is None else override.rename
             allowed_fields.add(kn)
 
             if handler:
+                struct_handler_name = f"__c_structure_{an}"
+                internal_arg_parts[struct_handler_name] = handler
                 if handler == converter._structure_call:
                     internal_arg_parts[struct_handler_name] = t
                     invocation_lines.append(