qt: fixed crash with TSplitter resizestyle=rsNone. issue #27559

git-svn-id: trunk@48042 -

lcl/interfaces/qt/qtlclintf.inc

@@ -891,6 +891,8 @@ end;
 
 procedure TQtWidgetSet.SetRubberBandRect(const ARubberBand: HWND; const ARect: TRect);
 begin
+  if ARubberBand = 0 then
+    exit;
   QRubberBand_setGeometry(QRubberBandH(ARubberBand), @ARect);
 end;