I'm no expert, but I think that Flu and HIV are probably too dissimilar genetically to even combine, let alone produce an effective offspring. I think as stated above, this is likely bad reporting or worse yet, intentionally bad reporting.

But, there is fear that it could combine with other influenza viruses: http://blogs.sciencemag.org/scienceinsider/2009/05/exclusive-meet.html

And I'm fairly sure that's a legit source.