message: action: remove missing 'this' capture
diff: @@ -452,7 +452,7 @@ void ActionImpl::command_result_callback(
  if (callback) {
  auto temp_callback = callback;
  _parent->call_user_callback(
  - [this, temp_callback, action_result]() { temp_callback(action_result); });
  + [temp_callback, action_result]() { temp_callback(action_result); });
  }
  }
  