Fixed jffs2valid.py Python3 bugs
Fixed jffs2valid.py Python3 bugs

pyq881120/binwalk,pyq881120/binwalk,cristianst85/binwalk,geekspeed/binwalk,gale320/binwalk,ddcc/binwalk,UniqMartin/binwalk,WooyunDota/binwalk,jiangbing9293/binwalk,anthraxx/binwalk,jiangbing9293/binwalk,draekko/binwalk,foreni-packages/binwalk,cappiewu/binwalk,hyper-xx/binwalk,MaiPhuoc/binwalk,foreni-packages/binwalk,anthraxx/binwalk,goofwear/binwalk,chubbymaggie/binwalk,itsens/binwalk,hyper-xx/binwalk,Eih3/binwalk,naterh/binwalk,cappiewu/binwalk,WooyunDota/binwalk,itsens/binwalk,thx0701/binwalk,geekspeed/binwalk,cristianst85/binwalk,AmesianX/binwalk,foreni-packages/binwalk,devttys0/binwalk,sundhaug92/binwalk,emprovements/binwalk,draekko/binwalk,sundhaug92/binwalk,sviehb/binwalk,Flameeyes/binwalk,sviehb/binwalk,zhuyue1314/binwalk,peterdocter/binwalk,pombredanne/binwalk,peterdocter/binwalk,zhuyue1314/binwalk,MaiPhuoc/binwalk,naterh/binwalk,Eih3/binwalk,pombredanne/binwalk,emprovements/binwalk,Flameeyes/binwalk,devttys0/binwalk,chubbymaggie/binwalk,UniqMartin/binwalk,goofwear/binwalk,ddcc/binwalk,gale320/binwalk,thx0701/binwalk,AmesianX/binwalk