[base/sliced] update sliced function

dune/xt/functions/base/sliced.hh

@@ -72,8 +72,7 @@ class SlicedGridFunction<LF, r, 1> : public XT::Functions::GridFunctionInterface
   protected:
     void post_bind(const ElementType& element) override final
     {
-      // local_function_->post_bind(element);
-      DUNE_THROW(NotImplemented, 'Implement it');
+      local_function_->bind(element);
     }
 
   public:
@@ -98,7 +97,7 @@ class SlicedGridFunction<LF, r, 1> : public XT::Functions::GridFunctionInterface
     }
 
   private:
-    const std::unique_ptr<typename LF::LocalFunctionType> local_function_;
+    std::unique_ptr<typename LF::LocalFunctionType> local_function_;
     const std::array<size_t, r>& dims_;
   }; // class SlicedLocalFunction