sw lok comments: don't paint hidden comment sub-widgets

Change-Id: Ia513821b43729951c7b097fea498f0e22b9d10ea
(cherry picked from commit 8a1b9ac5)

sw/source/uibase/docvw/SidebarWin.cxx

@@ -275,15 +275,13 @@ void SwSidebarWin::PaintTile(vcl::RenderContext& rRenderContext, const Rectangle
     {
         vcl::Window* pChild = GetChild(i);
 
-        // This would at the moment just draw a gray rectangle at the top right
-        // corner, need to sort out later.
-        if (pChild == mpVScrollbar.get())
-            continue;
-
         // No point in showing this button till click on it are not handled.
         if (pChild == mpMenuButton.get())
             continue;
 
+        if (!pChild->IsVisible())
+            continue;
+
         rRenderContext.Push(PushFlags::MAPMODE);
         const Fraction& rFraction(mrView.GetWrtShellPtr()->GetOut()->GetMapMode().GetScaleY());
         Point aOffset(PixelToLogic(pChild->GetPosPixel() * rFraction.GetDenominator() / rFraction.GetNumerator()));