Do not copy due to auto misuse

apps/launcher/graphicspage.cpp

@@ -154,7 +154,7 @@ bool Launcher::GraphicsPage::loadSettings()
     if (Settings::shadows().mEnableIndoorShadows)
         indoorShadowsCheckBox->setCheckState(Qt::Checked);
 
-    auto boundMethod = Settings::shadows().mComputeSceneBounds.get();
+    const auto& boundMethod = Settings::shadows().mComputeSceneBounds.get();
     if (boundMethod == "bounds")
         shadowComputeSceneBoundsComboBox->setCurrentIndex(0);
     else if (boundMethod == "primitives")

components/stereo/stereomanager.cpp

@@ -315,8 +315,7 @@ namespace Stereo
         else
         {
             auto* ds = osg::DisplaySettings::instance().get();
-            auto viewMatrix = mMainCamera->getViewMatrix();
-            auto projectionMatrix = mMainCamera->getProjectionMatrix();
+            const auto& projectionMatrix = mMainCamera->getProjectionMatrix();
             auto s = ds->getEyeSeparation() * Constants::UnitsPerMeter;
             mViewOffsetMatrix[0]
                 = osg::Matrixd(1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, s, 0.0, 0.0, 1.0);