Replace signals with Q_SIGNALS

src/scrobbler/audioscrobbler.h

@@ -85,7 +85,7 @@ class AudioScrobbler : public QObject {
   void Love();
   void WriteCache();
 
- signals:
+ Q_SIGNALS:
   void ErrorMessage(const QString &error);
 
  private:

src/scrobbler/lastfmimport.h

@@ -80,7 +80,7 @@ class LastFMImport : public QObject {
 
   void FinishCheck();
 
- signals:
+ Q_SIGNALS:
   void UpdatePlayCount(const QString&, const QString&, const int, const bool = false);
   void UpdateLastPlayed(const QString&, const QString&, const QString&, const qint64);
   void UpdateTotal(const int, const int);

src/scrobbler/listenbrainzscrobbler.h

@@ -77,7 +77,7 @@ class ListenBrainzScrobbler : public ScrobblerService {
     APIError
   };
 
- signals:
+ Q_SIGNALS:
   void AuthenticationComplete(const bool success, const QString &error = QString());
 
  public slots:

src/scrobbler/scrobblerservice.h

@@ -70,7 +70,7 @@ class ScrobblerService : public QObject {
   virtual void Submit() = 0;
   virtual void WriteCache() = 0;
 
- signals:
+ Q_SIGNALS:
   void ErrorMessage(const QString &error);
 
  protected:

src/scrobbler/scrobblersettings.h

@@ -57,7 +57,7 @@ class ScrobblerSettings : public QObject {
   void ToggleOffline();
   void ErrorReceived(const QString &error);
 
- signals:
+ Q_SIGNALS:
   void ErrorMessage(const QString &error);
   void ScrobblingEnabledChanged(const bool value);
   void ScrobblingOfflineChanged(const bool value);

src/scrobbler/scrobblingapi20.h

@@ -68,7 +68,7 @@ class ScrobblingAPI20 : public ScrobblerService {
   void Submit() override;
   void Love() override;
 
- signals:
+ Q_SIGNALS:
   void AuthenticationComplete(const bool success, const QString &error = QString());
 
  public slots: