Issue on DetectorConstructor?

[jgalan]

In the following piece of code

                for (const auto& logicalVolumeName : logicalVolumes) {
                    auto logicalVolumeRegex =
                        G4LogicalVolumeStore::GetInstance()->GetVolume(logicalVolumeName.Data(), false);
                    logicalVolumesSelected.insert(logicalVolume);
                }

logicalVolumeRegex is not being used. There is perhaps an issue?

[jgalan]

Fixed on #89