cppcheck: unreadVariable dp_gui_extensioncmdqueue

Change-Id: I0bf922c5f0135d32f66a756c9e6af0bb22575a75
Reviewed-on: https://gerrit.libreoffice.org/63532
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

desktop/source/deployment/gui/dp_gui_extensioncmdqueue.cxx

@@ -906,13 +906,10 @@ void ExtensionCmdQueue::Thread::_checkForUpdates(
         // If there is at least one directly downloadable extension then we
         // open the install dialog.
         std::vector< UpdateData > dataDownload;
-        int countWebsiteDownload = 0;
 
         for (auto const& data : vData)
         {
-            if ( !data.sWebsiteURL.isEmpty() )
-                countWebsiteDownload ++;
-            else
+            if ( data.sWebsiteURL.isEmpty() )
                 dataDownload.push_back(data);
         }