[webkit-reviews] review requested: [Bug 49685] Don't crash when invalidating a page overlay that hasn't been installed yet : [Attachment 74151] Patch

[bugzilla-daemon at webkit.org]

Anders Carlsson <andersca at apple.com> has asked	for review:
Bug 49685: Don't crash when invalidating a page overlay that hasn't been
installed yet
https://bugs.webkit.org/show_bug.cgi?id=49685

Attachment 74151: Patch
https://bugs.webkit.org/attachment.cgi?id=74151&action=review