Fix logging call in SQS post_process_results (see django-haystack#648)

This was used in an except: handler and would only be executed when a
load_all() queryset retrieved a model which wasn't registered with the
index.

Author: acdha

haystack/query.py

@@ -211,7 +211,7 @@ def post_process_results(self, results):
                     objects = index.read_queryset(using=self.query._using)
                     loaded_objects[model] = objects.in_bulk(models_pks[model])
                 except NotHandled:
-                    self.log.warning("Model '%s.%s' not handled by the routers.", self.app_label, self.model_name)
+                    self.log.warning("Model '%s' not handled by the routers", model)
                     # Revert to old behaviour
                     loaded_objects[model] = model._default_manager.in_bulk(models_pks[model])