message: Use range-for in StructureManager::count()
diff: @@ -297,9 +297,9 @@ void StructureManager::disconnectAll()
  int StructureManager::count() const
  {
  int count = 0;
  - for (auto it = mStructureLists.begin(); it != mStructureLists.end(); ++it)
  + for (auto pair : mStructureLists)
  {
  - count += static_cast<int>(it->second.size());
  + count += static_cast<int>(pair.second.size());
  }
  return count;
  