message: Fix regression in file changes monitoring
  Don't complain about external modification of files when it was Poedit
  itself who changed the file during update.
diff: @@ -236,7 +236,10 @@ public:
  {
  // unmonitor first (needed even if the filename didn't change)xx
  if (file == m_file)
  + {
  + m_loadTime = m_file.GetModificationTime();
  return;
  + }
  Reset();
  