Update visible ranges when updating the scroll bars.

That seems like the right place to update visible ranges, rather than
right before drawing the grid pane.

Change-Id: I230bfa753fca7bcd040bd55dba16dfa613d2e8f0

sc/source/ui/view/gridwin4.cxx

@@ -401,8 +401,6 @@ void ScGridWindow::Draw( SCCOL nX1, SCROW nY1, SCCOL nX2, SCROW nY2, ScUpdateMod
 
     OSL_ENSURE( ValidCol(nX2) && ValidRow(nY2), "GridWin Draw Bereich zu gross" );
 
-    UpdateVisibleRange();
-
     if (nX2 < maVisibleRange.mnCol1 || nY2 < maVisibleRange.mnRow1)
         return;
                     // unsichtbar

sc/source/ui/view/tabview4.cxx

@@ -439,6 +439,8 @@ void ScTabView::UpdateScrollBars()
         ScRange aVisible( nPosX, nPosY, nTab, nEndX, nEndY, nTab );
         if ( pDoc->SetVisibleSpellRange( aVisible ) )
             SC_MOD()->AnythingChanged();                // if visible area has changed
+
+        UpdateVisibleRange();
     }
 }