GCC13: fixes for warnings and errors

Author: Julien Fausty

src/coreComponents/mesh/generators/VTKFaceBlockUtilities.cpp

@@ -583,7 +583,7 @@ ArrayOfArrays< localIndex > computeElem2dToNodes( vtkIdType num2dElements,
       std::set< localIndex > tmp;
       for( auto j = 0; j < faceToNodes[faceIndex].size(); ++j )
       {
-        localIndex const & nodeIndex = faceToNodes[faceIndex][j];
+        localIndex const nodeIndex = faceToNodes[faceIndex][j];
         tmp.insert( nodeIndex );
       }
       for( localIndex const & nodeIndex: tmp )

src/coreComponents/unitTests/constitutiveTests/testMultiFluid.cpp

@@ -173,11 +173,11 @@ void testNumericalDerivatives( MultiFluidBase & fluid,
     GET_FLUID_DATA( fluid, fields::multifluid::dTotalDensity )
   };
 
-  auto const & phaseFracCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseFraction );
-  auto const & phaseDensCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseDensity );
-  auto const & phaseViscCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseViscosity );
-  auto const & phaseCompFracCopy = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseCompFraction );
-  auto const & totalDensCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::totalDensity );
+  auto const phaseFracCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseFraction );
+  auto const phaseDensCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseDensity );
+  auto const phaseViscCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseViscosity );
+  auto const phaseCompFracCopy = GET_FLUID_DATA( fluidCopy, fields::multifluid::phaseCompFraction );
+  auto const totalDensCopy     = GET_FLUID_DATA( fluidCopy, fields::multifluid::totalDensity );
 
 #undef GET_FLUID_DATA