Application: Use shared pointers

Fixes #1239

src/settings/scrobblersettingspage.h

@@ -20,11 +20,15 @@
 #ifndef SCROBBLERSETTINGSPAGE_H
 #define SCROBBLERSETTINGSPAGE_H
 
+#include <memory>
+
 #include "settingspage.h"
 
 #include <QObject>
 #include <QString>
 
+#include "core/shared_ptr.h"
+
 class SettingsDialog;
 class Ui_ScrobblerSettingsPage;
 class AudioScrobbler;
@@ -56,10 +60,10 @@ class ScrobblerSettingsPage : public SettingsPage {
   void ListenBrainz_AuthenticationComplete(const bool success, const QString &error = QString());
 
  private:
-  AudioScrobbler *scrobbler_;
-  LastFMScrobbler *lastfmscrobbler_;
-  LibreFMScrobbler *librefmscrobbler_;
-  ListenBrainzScrobbler *listenbrainzscrobbler_;
+  SharedPtr<AudioScrobbler> scrobbler_;
+  SharedPtr<LastFMScrobbler> lastfmscrobbler_;
+  SharedPtr<LibreFMScrobbler> librefmscrobbler_;
+  SharedPtr<ListenBrainzScrobbler> listenbrainzscrobbler_;
   Ui_ScrobblerSettingsPage *ui_;
 
   bool lastfm_waiting_for_auth_;