Release assert under RenderView::pageOrViewLogicalHeight

Release assert under RenderView::pageOrViewLogicalHeight
https://bugs.webkit.org/show_bug.cgi?id=189798
<rdar://problem/43659749>

Reviewed by Simon Fraser.

Source/WebCore:

Only the mainframe's render view is sized to the page while printing.
Use the matching check (see RenderView::layout) when accessing m_pageLogicalSize.

Test: printing/crash-while-formatting-subframe-for-printing.html

* rendering/RenderView.cpp:
(WebCore::RenderView::pageOrViewLogicalHeight const):

LayoutTests:

* printing/crash-while-formatting-subframe-for-printing-expected.txt: Added.
* printing/crash-while-formatting-subframe-for-printing.html: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@236288 268f45cc-cd09-0410-ab3c-d52691b4dbfc