[datareader.cpp] Improve comments & break long code line in two

src/datareader.cpp

@@ -214,16 +214,17 @@ void DataReader::readFile(QString file)
                 QDirIterator iterator(info.dir().path(), QDirIterator::Subdirectories);
                 while (iterator.hasNext()) {
                     iterator.next();
-                    // we are explicit about two common factors, the suffix .jpeg (ToDo: add .jpg and .png
-                    // throughout all C++ source code files), and basename cover or folder
+                    // we are explicit about two common factors, the suffix `jpeg` (ToDo: add `jpg` and `png`
+                    // throughout all C++ source files), and basename cover or folder
                     if (iterator.fileInfo().isFile()) {
                         if (  iterator.fileInfo().suffix() == "jpeg" &&
-                              // (… || iterator.fileInfo().suffix() == "jpg" || iterator.fileInfo().suffix() == "png") &&
+                              // See ToDo above: (… || iterator.fileInfo().suffix() == "jpg" || iterator.fileInfo().suffix() == "png") &&
                               (iterator.fileInfo().baseName() == "cover" ||
                                iterator.fileInfo().baseName() == "folder")
                            )
                         {
-                            QString th2 = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + "/media-art/album-"+ doubleHash(m_artist, m_album) + iterator.fileInfo().suffix();
+                            QString th2 = QStandardPaths::writableLocation(QStandardPaths::CacheLocation) + \
+                                          "/media-art/album-" + doubleHash(m_artist, m_album) + iterator.fileInfo().suffix();
                             qDebug() << "PROCESSING FILE: " << iterator.filePath() ;
                             QFile::copy(iterator.filePath(), th2);
                         }