Fix a warning

src/one-body-sample.cc

@@ -107,6 +107,8 @@ initTimeStepper(Config::scheme scheme, FunctionType const &dirichletFunction,
           EulerPair<VectorType, MatrixType, FunctionType, dims>>(
           stiffnessMatrix, massMatrix, u_initial, ud_initial, ignoreNodes,
           dirichletFunction);
+    default:
+      assert(false);
   }
 }
 
@@ -124,6 +126,8 @@ initStateUpdater(Config::state_model model,
       return Dune::make_shared<
           RuinaStateUpdater<SingletonVectorType, VectorType>>(
           alpha_initial, frictionalNodes, L);
+    default:
+      assert(false);
   }
 }