Comment 6 for bug 873239

Well, I think I made this bug much more complex than it is.
My stacktrace shows no problem with webkit... other bug I mention was having.

Here, the problem is only that the flush need to be inside try catch, because the write stream have been receive
at class initialisation.

We don't control it, it may well have been close, so we cannot assume that we can flush it... that's all... I think.