[Ns-commits] ns-3-dev

[code@nsnam.ece.gatech.edu]

---- update prev even if it is null
user: Timo Bingmann <timo.bingmann at student.kit.edu>
files: src/helper/yans-wifi-helper.cc
url: http://code.nsnam.org/ns-3-dev/rev/5c7df2c1cfc5