Use default

src/playlist/playlistfilter.cpp

@@ -69,8 +69,7 @@ PlaylistFilter::PlaylistFilter(QObject *parent)
                      << Playlist::Column_Bitrate;
 }
 
-PlaylistFilter::~PlaylistFilter() {
-}
+PlaylistFilter::~PlaylistFilter() = default;
 
 void PlaylistFilter::sort(int column, Qt::SortOrder order) {
   // Pass this through to the Playlist, it does sorting itself

src/playlist/playlistfilterparser.cpp

@@ -36,7 +36,7 @@
 class SearchTermComparator {
  public:
   SearchTermComparator() = default;
-  virtual ~SearchTermComparator() {}
+  virtual ~SearchTermComparator() = default;
   virtual bool Matches(const QString &element) const = 0;
  private:
   Q_DISABLE_COPY(SearchTermComparator)

src/playlist/playlistitem.cpp

@@ -80,7 +80,7 @@ PlaylistItem *PlaylistItem::NewFromSong(const Song &song) {
 
 }
 
-PlaylistItem::~PlaylistItem() {}
+PlaylistItem::~PlaylistItem() = default;
 
 void PlaylistItem::BindToQuery(QSqlQuery *query) const {