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Bug 1145724 - adding null check before creating treewalker in nsAccessibilityService::ContentRemoved r=surkov

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---
 accessible/base/nsAccessibilityService.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
This commit is contained in:
Yura Zenevich 2015-03-26 14:59:16 -04:00
parent 74215cc96c
commit b61849f87a
1 changed files with 3 additions and 2 deletions
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5
accessible/base/nsAccessibilityService.cpp
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@ -533,8 +533,9 @@ nsAccessibilityService::ContentRemoved(nsIPresShell* aPresShell,
// accessibles in subtree then we don't care about the change.
Accessible* child = document->GetAccessible(aChildNode);
if (!child) {
a11y::TreeWalker walker(document->GetContainerAccessible(aChildNode),
aChildNode, a11y::TreeWalker::eWalkCache);
Accessible* container = document->GetContainerAccessible(aChildNode);
a11y::TreeWalker walker(container ? container : document, aChildNode,
a11y::TreeWalker::eWalkCache);
child = walker.NextChild();
}