Fix minor code issues

src/context/contextview.cpp

@@ -535,6 +535,8 @@ void ContextView::handlePaintEvent(QObject *object, QEvent *event) {
 
 void ContextView::PaintEventAlbum(QEvent *event) {
 
+  Q_UNUSED(event);
+
   QPainter p(ui_->label_play_album);
 
   DrawImage(&p);
@@ -544,6 +546,7 @@ void ContextView::PaintEventAlbum(QEvent *event) {
     p.setOpacity(pixmap_previous_opacity_);
     p.drawPixmap(0, 0, pixmap_previous_);
   }
+
 }
 
 void ContextView::DrawImage(QPainter *p) {
@@ -595,6 +598,8 @@ void ContextView::ScaleCover() {
 
 void ContextView::AlbumCoverLoaded(const Song &song, const QUrl &cover_url, const QImage &image) {
 
+  Q_UNUSED(cover_url);
+
   if (song != song_playing_ || image == image_original_) return;
 
   active_ = true;