Use override

src/dialogs/addstreamdialog.h

@@ -32,13 +32,13 @@ class AddStreamDialog : public QDialog {
 
  public:
   AddStreamDialog(QWidget *parent = nullptr);
-  ~AddStreamDialog();
+  ~AddStreamDialog() override;
 
   QUrl url() const { return QUrl(ui_->url->text()); }
   void set_url(const QUrl &url) { ui_->url->setText(url.toString());}
 
  protected:
-  void showEvent(QShowEvent*);
+  void showEvent(QShowEvent*) override;
 
  private slots:
   void TextChanged(const QString &text);

src/dialogs/edittagdialog.h

@@ -62,7 +62,7 @@ class EditTagDialog : public QDialog {
 
  public:
   explicit EditTagDialog(Application *app, QWidget *parent = nullptr);
-  ~EditTagDialog();
+  ~EditTagDialog() override;
 
   static const char *kHintText;
   static const char *kSettingsGroup;
@@ -71,15 +71,15 @@ class EditTagDialog : public QDialog {
 
   PlaylistItemList playlist_items() const { return playlist_items_; }
 
-  void accept();
+  void accept() override;
 
  signals:
   void Error(const QString &message);
 
  protected:
-  bool eventFilter(QObject *o, QEvent *e);
-  void showEvent(QShowEvent*);
-  void hideEvent(QHideEvent*);
+  bool eventFilter(QObject *o, QEvent *e) override;
+  void showEvent(QShowEvent*) override;
+  void hideEvent(QHideEvent*) override;
 
  private:
   struct Data {

src/dialogs/errordialog.h

@@ -37,15 +37,15 @@ class ErrorDialog : public QDialog {
 
  public:
   explicit ErrorDialog(QWidget *parent = nullptr);
-  ~ErrorDialog();
+  ~ErrorDialog() override;
 
-public slots:
+ public slots:
   void ShowMessage(const QString &message);
 
-protected:
-  void hideEvent(QHideEvent *);
+ protected:
+  void hideEvent(QHideEvent*) override;
 
-private:
+ private:
   void UpdateContent();
 
   Ui_ErrorDialog *ui_;

src/dialogs/trackselectiondialog.h

@@ -39,7 +39,7 @@ class TrackSelectionDialog : public QDialog {
 
  public:
   explicit TrackSelectionDialog(QWidget *parent = nullptr);
-  ~TrackSelectionDialog();
+  ~TrackSelectionDialog() override;
 
   void set_save_on_close(bool save_on_close) { save_on_close_ = save_on_close; }
 
@@ -50,7 +50,7 @@ class TrackSelectionDialog : public QDialog {
   void FetchTagFinished(const Song &original_song, const SongList &songs_guessed);
 
   // QDialog
-  void accept();
+  void accept() override;
 
  signals:
   void Error(const QString&);