fix drawing of calc input line when vcl backend supports CTRL_FRAME

it is counterintuitive, but FRAME_DRAW_NWF was introduced to shrink a draw
rectangle on its way, regardless of native CTRL_FRAME support
(see d02e19e3).
And that is what we want for the calc input line.

Change-Id: Ie2f8bc6e2e21a56b081b8c71cc2b642b8f05848f

vcl/source/window/decoview.cxx

@@ -663,7 +663,8 @@ void ImplDrawFrame( OutputDevice *const pDev, Rectangle& rRect,
          bFlatBorders )
         nStyle |= FRAME_DRAW_MONO;
 
-    if( pWin && pWin->IsNativeControlSupported(CTRL_FRAME, PART_BORDER) )
+    if( !(nStyle & FRAME_DRAW_NWF) &&
+        pWin && pWin->IsNativeControlSupported(CTRL_FRAME, PART_BORDER) )
     {
         ImplControlValue aControlValue( nStyle |
                                         (pWin->GetType()==WINDOW_BORDERWINDOW ?