[webkit-reviews] review requested: [Bug 114672] should null check mainResourceLoader() before use it : [Attachment 198717] add a test case, thanks

[bugzilla-daemon at webkit.org]

Mary Wu <mary.wu at torchmobile.com.cn> has asked	for review:
Bug 114672: should null check mainResourceLoader() before use it
https://bugs.webkit.org/show_bug.cgi?id=114672

Attachment 198717: add a test case, thanks
https://bugs.webkit.org/attachment.cgi?id=198717&action=review