WebCore:

WebCore:

        Reviewed by Oliver.

        Fix for <rdar://problem/5566652> CrashTracer: [USER] 3 crashes in Safari at HTMLSelectElement::menuListDefaultEventHandler (reproducible on mactc30.com)

        Test: fast/forms/menulist-no-renderer-onmousedown.html

        * html/HTMLSelectElement.cpp:
        (WebCore::HTMLSelectElement::defaultEventHandler): Nil check the renderer here.  None of the default behavior makes sense if there's no renderer.
        (WebCore::HTMLSelectElement::listBoxDefaultEventHandler): Moved the nil check to the main defaultEventHandler.

LayoutTests:

        Reviewed by Oliver.

        Test for <rdar://problem/5566652> CrashTracer: [USER] 3 crashes in Safari at HTMLSelectElement::menuListDefaultEventHandler (reproducible on mactc30.com)

        * fast/forms/menulist-no-renderer-onmousedown-expected.txt: Added.
        * fast/forms/menulist-no-renderer-onmousedown.html: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@27843 268f45cc-cd09-0410-ab3c-d52691b4dbfc