Fix a compiler error from a rather picky clang++

logbook/AD1CCty.cpp

@@ -155,6 +155,10 @@ typedef multi_index_container<
 class AD1CCty::impl final
 {
 public:
+  explicit impl ()
+  {
+  }
+
   Record fixup (QString const& call, prefix const& p) const
   {
     using entity_by_id = entities_type::index<id>::type;

mainwindow.cpp

@@ -7938,7 +7938,6 @@ void MainWindow::houndCallers()
         if(m_loggedByFox[houndCall].contains(m_lastBand))   continue;   //already logged on this band
         if(m_foxQSO.contains(houndCall)) continue;   //still in the QSO map
         auto const& entity = m_logBook.countries ().lookup (houndCall);
-        auto const& countryName = entity.entity_name;
         auto const& continent = AD1CCty::continent (entity.continent);
 
 //If we are using a directed CQ, ignore Hound calls that do not comply.