QCodec destructor problem

[morya]

I am learning the QT examples.
When I go into the Codec example,
tools/codecs/mainwindow.cpp
I found line 91 the object QTextCodec 's subclass is created, but I can't find where it has been deleted,
will it cause memory leackage ?

foreach (int mib, QTextCodec::availableMibs()) {
        QTextCodec *codec = QTextCodec::codecForMib(mib);
 
        QString sortKey = codec->name().toUpper();
        int rank;
 
        if (sortKey.startsWith("UTF-8")) {
            rank = 1;
        } else if (sortKey.startsWith("UTF-16")) {
            rank = 2;
        } else if (iso8859RegExp.exactMatch(sortKey)) {
            if (iso8859RegExp.cap(1).size() == 1)
                rank = 3;
            else
                rank = 4;
        } else {
            rank = 5;
        }
        sortKey.prepend(QChar('0' + rank));
 
        codecMap.insert(sortKey, codec);
    }

foreach (int mib, QTextCodec::availableMibs()) {
        QTextCodec *codec = QTextCodec::codecForMib(mib);

        QString sortKey = codec->name().toUpper();
        int rank;

        if (sortKey.startsWith("UTF-8")) {
            rank = 1;
        } else if (sortKey.startsWith("UTF-16")) {
            rank = 2;
        } else if (iso8859RegExp.exactMatch(sortKey)) {
            if (iso8859RegExp.cap(1).size() == 1)
                rank = 3;
            else
                rank = 4;
        } else {
            rank = 5;
        }
        sortKey.prepend(QChar('0' + rank));

        codecMap.insert(sortKey, codec);
    }

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[ChristianEhrlicher]

And don't see a 'new QTextCodec' anywhere - so why do you think there's a memleak?