Fix some warnings

src/jobs/filterclipjob.cpp

@@ -76,7 +76,7 @@ const QString FilterClipJob::getDescription() const
 void FilterClipJob::configureConsumer()
 {
     m_consumer = std::make_unique<Mlt::Consumer>(*m_profile.get(), "null");
-    for (const QString param : m_consumerArgs) {
+    for (const QString &param : m_consumerArgs) {
         if (param.contains(QLatin1Char('='))) {
             m_consumer->set(param.section(QLatin1Char('='), 0, 0).toUtf8().constData(), param.section(QLatin1Char('='), 1).toInt());
         }

src/jobs/loadjob.cpp

@@ -578,7 +578,7 @@ void LoadJob::processMultiStream()
     mainLayout->addWidget(mainWidget);
     QPushButton *okButton = buttonBox->button(QDialogButtonBox::Ok);
     okButton->setDefault(true);
-    okButton->setShortcut(Qt::CTRL | Qt::Key_Return);
+    okButton->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_Return));
     dialog->connect(buttonBox, &QDialogButtonBox::accepted, dialog.data(), &QDialog::accept);
     dialog->connect(buttonBox, &QDialogButtonBox::rejected, dialog.data(), &QDialog::reject);
     okButton->setText(i18n("Import selected clips"));