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Don't reuse input blocks with dead APZCs. (bug 1110038, r=kats)

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--HG--
extra : rebase_source : 458816195b9e8e0394bfdf662b7173328015415c
This commit is contained in:
David Anderson 2014-12-11 13:03:27 -08:00
parent 6bd9ba41ec
commit 3f3a7ab1cf
1 changed files with 6 additions and 1 deletions
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7
gfx/layers/apz/src/InputQueue.cpp
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@ -127,7 +127,12 @@ InputQueue::ReceiveScrollWheelInput(const nsRefPtr<AsyncPanZoomController>& aTar
uint64_t* aOutInputBlockId) {
WheelBlockState* block = nullptr;
if (!mInputBlockQueue.IsEmpty()) {
block = mInputBlockQueue.LastElement().get()->AsWheelBlock();
block = mInputBlockQueue.LastElement()->AsWheelBlock();
// If the block's APZC has been destroyed, request a new block.
if (block && block->GetTargetApzc()->IsDestroyed()) {
block = nullptr;
}
}
if (!block) {