refactoring

libmesh/fem_system_ex4.cpp

@@ -175,8 +175,7 @@ int main(int argc, char** argv) {
 			// size at once
 			libmesh_assert_equal_to(nelem_target, 0);
 
-			libMesh::UniformRefinementEstimator* u{
-			    new libMesh::UniformRefinementEstimator};
+			auto u = new libMesh::UniformRefinementEstimator;
 
 			// The lid-driven cavity problem isn't in H1, so
 			// lets estimate L2 error