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bug 667396 - nsAccessibilityService::GetAccessibleFor() is an external api so we should NULL check the node argument r=surkov

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This commit is contained in:
Trevor Saunders 2011-06-28 16:26:37 -07:00
parent ba740a2e7a
commit 67b74ace90
1 changed files with 3 additions and 0 deletions
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3
accessible/src/base/nsAccessibilityService.cpp
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@ -635,6 +635,9 @@ nsAccessibilityService::GetAccessibleFor(nsIDOMNode *aNode,
nsIAccessible **aAccessible)
{
NS_ENSURE_ARG_POINTER(aAccessible);
*aAccessible = nsnull;
if (!aNode)
return NS_OK;
nsCOMPtr<nsINode> node(do_QueryInterface(aNode));
NS_IF_ADDREF(*aAccessible = GetAccessible(node));