message: Remove file before copying so we can overwrite
diff: @@ -592,6 +592,10 @@ bool MainWindow::PromptSaveLog()
  // we copy the (possibly) temp log to the desired path, but the log item remains referring to
  // the original path.
  // This ensures that if the user deletes the saved path we can still open or re-save it.
  +
  + // QFile::copy won't overwrite, so remove the destination first (the save dialog already
  + // prompted for overwrite)
  + QFile::remove(saveFilename);
  success = QFile::copy(m_Ctx.LogFilename(), saveFilename);
  error = tr("Couldn't save to %1").arg(saveFilename);
  