merge statements

GUI/Model/Data/DataItem.cpp

@@ -127,9 +127,8 @@ void DataItem::saveDatafield(const QString& projectDir) const
         return;
 
     std::unique_lock<std::mutex> lock(m_update_data_mutex); // TODO why lock??
-    auto* clone = converted_field()->clone();
+    std::unique_ptr<const Datafield> field(converted_field()->clone());
     lock.unlock();
-    std::unique_ptr<const Datafield> field(clone);
 
     if (m_saveInBackground) {
         std::string errorMessage;