Avoid converting target_id if it's None

discord/audit_logs.py

@@ -723,11 +723,12 @@ class AuditLogEntry(Hashable):
         if self.action.target_type is None:
             return None
 
+        if self._target_id is None:
+            return None
+
         try:
             converter = getattr(self, '_convert_target_' + self.action.target_type)
         except AttributeError:
-            if self._target_id is None:
-                return None
             return Object(id=self._target_id)
         else:
             return converter(self._target_id)