fix 34963. check in fix patch by m_kato@ga2.so-net.ne.jp

add ::CoUninitialize

widget/src/windows/nsToolkit.cpp

@@ -111,6 +111,7 @@ BOOL APIENTRY DllMain(  HINSTANCE hModule,
                 nsToolkit::gAIMMApp->Release();
 
             nsToolkit::gAIMMApp = NULL;
+            ::CoUninitialize();
 #endif
             //VERIFY(::UnregisterClass("nsToolkitClass", nsToolkit::mDllInstance));
             ::UnregisterClass("nsToolkitClass", nsToolkit::mDllInstance);