Fix FTBFS from issue #6.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

src/pdiff.cpp

@@ -1447,7 +1447,7 @@ void KDiff3App::slotSelectionStart()
    //editCopy->setEnabled( false );
    //editCut->setEnabled( false );
 
-   const TQObject* s = TQT_TQOBJECT(sender());
+   const TQObject* s = sender();
    if (m_pDiffTextWindow1 && s!=m_pDiffTextWindow1)   m_pDiffTextWindow1->resetSelection();
    if (m_pDiffTextWindow2 && s!=m_pDiffTextWindow2)   m_pDiffTextWindow2->resetSelection();
    if (m_pDiffTextWindow3 && s!=m_pDiffTextWindow3)   m_pDiffTextWindow3->resetSelection();