I was just browsing the "newest" apps on the featured page in the App world and found this:
BlackBerry App World - PlayQR
The camera seems really sluggish when trying to scan but it does work. Used it on QR codes that contained text messages and I was able to test it on QR codes that had links. Hopefully future updates fix the slow cam. This will have to do for now. Oh and one more thing, it's free :D