Silence -Werror,-Wnon-virtual-dtor

Change-Id: I46f7b68aded50abc0015b458507adbf84d0ffe76

embedserv/source/inprocserv/inprocembobj.h

@@ -89,7 +89,7 @@ class InprocEmbedDocument_Impl : public InprocCountedObject_Impl
     ComSmart< OleWrapperAdviseSink > m_pDataAdvises[DEFAULT_ARRAY_LEN];
     ComSmart< OleWrapperAdviseSink > m_pViewAdvise;
 
-    class InternalCacheWrapper : public IOleCache2
+    class InternalCacheWrapper final: public IOleCache2
     {
         InprocEmbedDocument_Impl& m_rOwnDocument;
 
@@ -98,6 +98,8 @@ class InprocEmbedDocument_Impl : public InprocCountedObject_Impl
         : m_rOwnDocument( rOwnDocument )
         {}
 
+        virtual ~InternalCacheWrapper() {}
+
         /* IUnknown methods */
         STDMETHOD(QueryInterface)(REFIID riid, LPVOID FAR * ppvObj);
         STDMETHOD_(ULONG, AddRef)();