[webkit-reviews] review requested: [Bug 41013] Crash when the renderer for the button in <input type="number"> goes away during event handling : [Attachment 59422] patch

[bugzilla-daemon at webkit.org]

Adele Peterson <adele at apple.com> has asked  for review:
Bug 41013: Crash when the renderer for the button in <input type="number"> goes
away during event handling
https://bugs.webkit.org/show_bug.cgi?id=41013

Attachment 59422: patch
https://bugs.webkit.org/attachment.cgi?id=59422&action=review

------- Additional Comments from Adele Peterson <adele at apple.com>
This is a nil check fix.

I suspect that the test will not trigger the crash on all platforms due to
different metrics for the spinner button.  Since it definitely does trigger the
crash on Mac and won't cause harm on the other platforms, it seems fine for
now.