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Bug 770096 - Prevent crashes when encountering an empty ThebesLayer. r=roc

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This commit is contained in:
Matt Woodrow 2012-07-25 09:39:01 +12:00
parent 639c29d087
commit 5102cafa8e
1 changed files with 4 additions and 0 deletions
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4
layout/base/FrameLayerBuilder.cpp
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@ -2630,6 +2630,10 @@ FrameLayerBuilder::DrawThebesLayer(ThebesLayer* aLayer,
// so 'entry' could become invalid.
}
if (!containerLayerFrame) {
return;
}
ThebesDisplayItemLayerUserData* userData =
static_cast<ThebesDisplayItemLayerUserData*>
(aLayer->GetUserData(&gThebesDisplayItemLayerUserData));