Use reference to avoid range-loop-construct diagnostic

Pulled from scap-workbench-1.2.1-7 in Fedora Rawhide.

Signed-off-by: Alexander Scheel <[email protected]>

Author: Jeff Law

src/MainWindow.cpp

@@ -409,7 +409,7 @@ void MainWindow::openFile(const QString& path, bool reload)
 
         // Refill mFSWatch after opening file
         mFSWatch->removePaths(mFSWatch->files());
-        for (const QString path : mScanningSession->getOriginalClosure())
+        for (const QString &path : mScanningSession->getOriginalClosure())
         {
             mFSWatch->addPath(path);
         }