simplify

stepmania/src/ScreenSelectMusic.cpp

@@ -707,10 +707,7 @@ void ScreenSelectMusic::MenuStart( PlayerNumber pn )
 		return;
 
 	// a song was selected
-	switch( m_MusicWheel.GetSelectedType() )
-	{
-	case TYPE_SONG:
-	case TYPE_PORTAL:
+	if( m_MusicWheel.GetSelectedSong() != NULL )
 	{
 		const bool bIsNew = PROFILEMAN->IsSongNew( m_MusicWheel.GetSelectedSong() );
 		bool bIsHard = false;
@@ -749,9 +746,7 @@ void ScreenSelectMusic::MenuStart( PlayerNumber pn )
 		if( GAMESTATE->IsCourseMode() )
 			GAMESTATE->m_PlayMode.Set( PLAY_MODE_REGULAR );
 	}
-		break;
-
-	case TYPE_COURSE:
+	else if( m_MusicWheel.GetSelectedCourse() != NULL )
 	{
 		SOUND->PlayOnceFromAnnouncer( "select course comment general" );
 
@@ -768,15 +763,10 @@ void ScreenSelectMusic::MenuStart( PlayerNumber pn )
 
 		m_bMadeChoice = true;
 	}
-		break;
-	case TYPE_SECTION:
-	case TYPE_ROULETTE:
-	case TYPE_RANDOM:
-	case TYPE_SORT:
+	else
+	{
 		/* We havn't made a selection yet. */
 		return;
-	default:
-		ASSERT(0);
 	}
 
 	SCREENMAN->PlayStartSound();