ScreenRecorder: Add a label to the FPS spinbox

For some reason I never noticed that it was missing.

Fixes: QTCREATORBUG-29809
Change-Id: I1da933d3e220c035ecdeb2f0a5d044d68081b413
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/screenrecorder/record.cpp

@@ -96,6 +96,8 @@ RecordOptionsDialog::RecordOptionsDialog(QWidget *parent)
 
     m_cropScene = new CropScene;
 
+    m_recordFrameRate.setLabelText(Tr::tr("FPS:"));
+
     m_resetButton = new QToolButton;
     m_resetButton->setIcon(Icons::RESET.icon());