Minor improvements at startup

Found due to expiry date

src/swiftdata/main.cpp

@@ -29,9 +29,13 @@ int main(int argc, char *argv[])
     CGuiApplication a("swift mapping tool", CApplicationInfo::MappingTool, CIcons::swiftDatabase48());
     a.setSignalStartupAutomatically(false); // application will signal startup on its own
     a.splashScreen(CIcons::swiftDatabase256());
-    a.parse();
+    if (!a.parse()) { return EXIT_FAILURE; }
     a.useWebDataServices(BlackCore::CWebReaderFlags::AllSwiftDbReaders, CDatabaseReaderConfigList::forMappingTool());
-    if (!a.start()) { return EXIT_FAILURE; }
+    if (!a.start())
+    {
+        a.gracefulShutdown();
+        return EXIT_FAILURE;
+    }
     CSwiftData w;
     w.show();
     int r = a.exec();