Bug: Text overlaps controls in an Alert Window without a title

[RolandMR]

Example code:

        gin::PluginAlertWindow w ("", "Create preset:", AlertWindow::NoIcon, this);
        w.setLookAndFeel (&slProc.lf.get());
        w.addTextEditor ("name", "", "Name:");
        w.addTextEditor ("author", "", "Author:");
        w.addTextEditor ("tags", "", "Tags:");
        w.addButton ("OK", 1, KeyPress (KeyPress::returnKey));
        w.addButton ("Cancel", 0, KeyPress (KeyPress::escapeKey));

Result: