openflow: Make comment slightly more obvious
openflow: Make comment slightly more obvious

This is just an update to align a comment slightly better with some
of the code (a more elegant rewrite of older code desynced with
the comment slightly).

(Noted by @JoeySo22 in noxrepo/pox#276)

MurphyMc/pox,MurphyMc/pox,MurphyMc/pox,MurphyMc/pox,MurphyMc/pox