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Bug 546748 - topcrash regression: null dereference in nsRefPtr<T>::assign_assuming_AddRef(AddStyleSheetTxn*) | nsAccEventQueue::Shutdown() [@nsRefPtr<AddStyleSheetTxn>::assign_assuming_AddRef(AddStyleSheetTxn*) | nsAccEventQueue::Shutdown()], r=davidb
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@ -634,8 +634,10 @@ nsDocAccessible::Shutdown()
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return NS_OK; // Already shutdown
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}
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mEventQueue->Shutdown();
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mEventQueue = nsnull;
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if (mEventQueue) {
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mEventQueue->Shutdown();
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mEventQueue = nsnull;
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}
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nsCOMPtr<nsIDocShellTreeItem> treeItem =
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nsCoreUtils::GetDocShellTreeItemFor(mDOMNode);
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