qt4: Open disc: cosmetics

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>
(cherry picked from commit 93154b67)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/components/open_panels.cpp

@@ -550,7 +550,7 @@ void DiscOpenPanel::updateMRL()
             opts += " :sub-track=" +
                 QString("%1").arg( ui.subtitlesSpin->value() );
     }
-    if( ui.audioCDRadioButton->isChecked() )
+    else if( ui.audioCDRadioButton->isChecked() )
     {
         if( ui.titleSpin->value() > 0 )
             opts += QString(" :cdda-track=%1").arg( ui.titleSpin->value() );