PVS-Studio warning V637 for KDE4

void
KViewSearchLine::slotColumnsRemoved(const QModelIndex &,
                                    int first, int last)
{
  if(d->treeView)
    updateSearch();
  else
  {
    if(d->listView->modelColumn() >= first &&
       d->listView->modelColumn() <= last)
    {
      if(d->listView->modelColumn()>last)   //<==
        kFatal()<<"...."<<endl;
      updateSearch();
    }
  }
}

This suspicious code was found in KDE4 project by PVS-Studio static code analyzer.
Warning message is:
V637 Two opposite conditions were encountered. The second condition is always false. Check lines: 410, 412. kebsearchline.cpp 410

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/