Improve logging for errors

This commit also allows the strings to be translated.

src/base/bittorrent/private/resumedatasavingmanager.cpp

@@ -44,12 +44,9 @@ void ResumeDataSavingManager::save(const QString &filename, const QByteArray &da
     const QString filepath = m_resumeDataDir.absoluteFilePath(filename);
 
     QSaveFile file {filepath};
-    if (file.open(QIODevice::WriteOnly)) {
-        file.write(data);
-        if (!file.commit()) {
-            Logger::instance()->addMessage(QString("Couldn't save data in '%1'. Error: %2")
-                                           .arg(filepath, file.errorString()), Log::WARNING);
-        }
+    if (!file.open(QIODevice::WriteOnly) || (file.write(data) != data.size()) || !file.commit()) {
+        LogMsg(tr("Couldn't save data to '%1'. Error: %2")
+            .arg(filepath, file.errorString()), Log::CRITICAL);
     }
 }