Hiroyuki Ikezoe e36d97e3e4 Bug 1432396 - Call UnblockOnload only if we've already blocked load event. r=bz ...

When the window is destroyed in unload event callbacks for the previous
document, we haven't started loading, i.e. we haven't called BlockOnload()
for the new document in nsContentSink::WillBuildModelImpl, so if we called
nsDocument::StopDocumentLoad() in such cases, UnblockOnload calls will mismatch
BlockOnload calls.

MozReview-Commit-ID: HjLtmGGvXKS

2018-02-16 06:15:01 +09:00

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