Fix some more things to get async working

jedi/plugins/stdlib.py

@@ -59,10 +59,10 @@ class StdlibPlugin(BasePlugin):
             else:
                 if context.parent_context == self._evaluator.builtins_module:
                     module_name = 'builtins'
-                elif isinstance(context.parent_context, ModuleContext):
+                elif context.parent_context.is_module():
                     module_name = context.parent_context.name.string_name
                 else:
-                    module_name = ''
+                    return callback(context, arguments=arguments)
 
                 if isinstance(context, BoundMethod):
                     if module_name == 'builtins':