assert in QLibraryStore::releaseLibrary while unloading libdbus-1.so

#include <QApplication>
#include <QWidget>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget w;
    w.show();

    return a.exec();
}

../qt5/configure -prefix ../qt5_static_install -opensource -skip qtwebkit -skip qtwebkit-examples -nomake examples -nomake tests -rpath -nomake examples -nomake tests -confirm-license -debug -static -no-qml-debug -qt-libpng -qt-libjpeg -qt-freetype -optimized-qmake -no-icu -strip -qt-xcb