Fix code style and errors

src/covermanager/albumcoverchoicecontroller.cpp

@@ -422,10 +422,7 @@ bool AlbumCoverChoiceController::CanAcceptDrag(const QDragEnterEvent *e) {
     const QString suffix = QFileInfo(url.toLocalFile()).suffix().toLower();
     if (IsKnownImageExtension(suffix)) return true;
   }
-  if (e->mimeData()->hasImage()) {
-    return true;
-  }
-  return false;
+  return e->mimeData()->hasImage();
 
 }
 

src/covermanager/coverexportrunnable.cpp

@@ -31,8 +31,9 @@
 #include "core/tagreaderclient.h"
 #include "coverexportrunnable.h"
 
-CoverExportRunnable::CoverExportRunnable(const AlbumCoverExport::DialogResult &dialog_result, const Song &song)
-    : dialog_result_(dialog_result), song_(song) {}
+CoverExportRunnable::CoverExportRunnable(const AlbumCoverExport::DialogResult &dialog_result, const Song &song) :
+    dialog_result_(dialog_result),
+    song_(song) {}
 
 void CoverExportRunnable::run() {
 

src/covermanager/coverexportrunnable.h

@@ -55,7 +55,7 @@ signals:
 
   AlbumCoverExport::DialogResult dialog_result_;
   Song song_;
-  AlbumCoverExporter* album_cover_exporter_;
+
 };
 
 #endif  // COVEREXPORTRUNNABLE_H