In the method WaveHelper::AssignStreams, there is a wrong at the line 424, which should be "++J" instead of current "++i"

   424           for (std::vector<Ptr<WifiPhy> >::iterator j = phys.begin (); j != phys.end (); ++i)
   425             {
   426               currentStream += (*j)->AssignStreams (currentStream);
   427             }