Handle a disconnected view during applyTopLeftLocationOffset

https://bugs.webkit.org/show_bug.cgi?id=241355
<rdar://92432637>

Reviewed by Alan Bujtas.

It appears that we can sometimes end up in a state where the document's
view is disconnected during didLayout, which calls applyTopleftLocationOffset.
This just adds a null check to handle this case for now.

* Source/WebCore/rendering/RenderBox.h:
(WebCore::RenderBox::applyTopLeftLocationOffset const):

Canonical link: https://commits.webkit.org/251405@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@295399 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/rendering/RenderBox.h

@@ -592,7 +592,7 @@ override;
     void applyTopLeftLocationOffset(LayoutPoint& point) const
     {
         // This is inlined for speed, since it is used by updateLayerPosition() during scrolling.
-        if (!document().view()->hasFlippedBlockRenderers())
+        if (!document().view() || !document().view()->hasFlippedBlockRenderers())
             point.move(m_frameRect.x(), m_frameRect.y());
         else
             applyTopLeftLocationOffsetWithFlipping(point);