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Bug 1917017 - Add a null-check in FirePageHideEventForFrameLoaderSwap. r=smaug, a=dsmith

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Not sure what guarantees this in presence of random script running?

Differential Revision: https://phabricator.services.mozilla.com/D222335
This commit is contained in:
Emilio Cobos Álvarez 2024-09-16 20:53:26 +00:00
parent c07d0da21a
commit 677d8613eb
1 changed files with 3 additions and 3 deletions
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6
dom/base/nsContentUtils.cpp
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@ -8909,9 +8909,9 @@ void nsContentUtils::FirePageHideEventForFrameLoaderSwap(
MOZ_DIAGNOSTIC_ASSERT(aItem);
MOZ_DIAGNOSTIC_ASSERT(aChromeEventHandler);
RefPtr<Document> doc = aItem->GetDocument();
NS_ASSERTION(doc, "What happened here?");
doc->OnPageHide(true, aChromeEventHandler, aOnlySystemGroup);
if (RefPtr<Document> doc = aItem->GetDocument()) {
doc->OnPageHide(true, aChromeEventHandler, aOnlySystemGroup);
}
int32_t childCount = 0;
aItem->GetInProcessChildCount(&childCount);