bug 197121; fix QI (r=brian johnson, sr=sfraser)
git-svn-id: svn://10.0.0.236/trunk@141615 18797224-902f-48f8-a5cc-f745e15eee43
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@@ -843,7 +843,7 @@ nsClipboardDragDropHookCommand::DoCommandParams(const char *aCommandName,
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nsresult rv = aParams->GetISupportsValue("addhook", getter_AddRefs(isuppHook));
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if (NS_SUCCEEDED(rv))
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{
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nsCOMPtr<nsIClipboardDragDropHooks> hook = do_GetInterface(isuppHook);
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nsCOMPtr<nsIClipboardDragDropHooks> hook = do_QueryInterface(isuppHook);
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if (hook)
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returnValue = obj->AddClipboardDragDropHooks(hook);
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else
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