message: MapsManager: added a check if memory is set
diff: @@ -495,7 +495,7 @@ std::map<int, rtabmap::Transform> MapsManager::updateMapCaches(
  "save them back in the database for next sessions. This warning is only shown once.",
  data.id(), Parameters::kRGBDCreateOccupancyGrid().c_str());
  }
  - if(occupancySavedInDB)
  + if(memory && occupancySavedInDB)
  {
  // if we are here, it is because we loaded a database with old nodes not having occupancy grid set
  // try reload again
  