message: integration_tests: fix warning
diff: @@ -71,7 +71,7 @@ void check_interval_on(std::shared_ptr<Camera> camera, bool on)
  // Check if status is correct
  Camera::StatusHandle handle =
  - camera->subscribe_status([prom, on, camera, handle](Camera::Status status) {
  + camera->subscribe_status([prom, on, camera, &handle](Camera::Status status) {
  camera->unsubscribe_status(handle);
  EXPECT_EQ(status.photo_interval_on, on);
  prom->set_value();
  