KDirWatch crash fix

[David Faure]

After making some changes to kdirmodeltest I've been hitting a reproduceable crash in KDirWatch.

The problem comes from this code in removeEntry:
      if (e->isDir)
        removeEntry(0, QDir::cleanPath(e->path+"/.."), e);
      else
        removeEntry(0, QFileInfo(e->path).absolutePath(), e);

If the entry for that "parent directory" is in removeList (the list of removed deletions)
then when processing that list it will crash, due to looking at an already-deleted entry.

Any objections against the attached patch?

-- 
David Faure, faure at kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).
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