Work around clang-cl PR25641

"defaultbootstrap.o : error LNK2001: unresolved external symbol
'[thunk]:private: virtual class com::sun:⭐:uno::Sequence<class
rtl::OUString> __cdecl cppuhelper::ServiceManager::getAvailableServiceNames`adjustor{24}'
(void)'
(?getAvailableServiceNames@ServiceManager@cppuhelper@@GBI@EAA?AV?$Sequence@VOUString@rtl@@@uno@star@sun@com@@XZ)"

Change-Id: I04b7353305ffeeb316d70ab8408aeb52ea0f7186

cppuhelper/source/servicemanager.cxx

@@ -1353,6 +1353,8 @@ sal_Bool cppuhelper::ServiceManager::hasPropertyByName(
     return Name == "DefaultContext";
 }
 
+cppuhelper::ServiceManager::~ServiceManager() {}
+
 void cppuhelper::ServiceManager::disposing(
     css::lang::EventObject const & Source)
     throw (css::uno::RuntimeException, std::exception)

cppuhelper/source/servicemanager.hxx

@@ -204,7 +204,7 @@ public:
         std::shared_ptr< Data::Implementation > & implementation);
 
 private:
-    virtual ~ServiceManager() {}
+    virtual ~ServiceManager();
 
     virtual void SAL_CALL disposing() override;