Fix unused variable warnings

src/base/net/geoipmanager.cpp

@@ -45,7 +45,6 @@
 static const char DATABASE_URL[] = "https://geolite.maxmind.com/download/geoip/database/GeoLite2-Country.mmdb.gz";
 static const char GEOIP_FOLDER[] = "GeoIP";
 static const char GEOIP_FILENAME[] = "GeoLite2-Country.mmdb";
-static const int CACHE_SIZE = 1000;
 static const int UPDATE_INTERVAL = 30; // Days between database updates
 
 using namespace Net;

src/base/net/smtp.cpp

@@ -53,7 +53,9 @@
 namespace
 {
     const short DEFAULT_PORT = 25;
+#ifndef QT_NO_OPENSSL
     const short DEFAULT_PORT_SSL = 465;
+#endif
 
     QByteArray hmacMD5(QByteArray key, const QByteArray &msg)
     {

src/gui/optionsdlg.cpp

@@ -1638,6 +1638,9 @@ void OptionsDialog::setSslKey(const QByteArray &key, bool interactive)
         if (interactive)
             QMessageBox::warning(this, tr("Invalid key"), tr("This is not a valid SSL key."));
     }
+#else
+    Q_UNUSED(key);
+    Q_UNUSED(interactive);
 #endif
 }
 
@@ -1654,6 +1657,9 @@ void OptionsDialog::setSslCertificate(const QByteArray &cert, bool interactive)
         if (interactive)
             QMessageBox::warning(this, tr("Invalid certificate"), tr("This is not a valid SSL certificate."));
     }
+#else
+    Q_UNUSED(cert);
+    Q_UNUSED(interactive);
 #endif
 }