Fixed bug in module kwarg processing that ignored default kwarg key values.
Fixed bug in module kwarg processing that ignored default kwarg key values.

devttys0/binwalk,anthraxx/binwalk,AmesianX/binwalk,sviehb/binwalk,Flameeyes/binwalk,peterdocter/binwalk,ddcc/binwalk,0x7678/binwalk,naterh/binwalk,itsens/binwalk,WooyunDota/binwalk,geekspeed/binwalk,Eih3/binwalk,jiangbing9293/binwalk,sundhaug92/binwalk,goofwear/binwalk,foreni-packages/binwalk,chubbymaggie/binwalk,pombredanne/binwalk,Flameeyes/binwalk,geekspeed/binwalk,zhuyue1314/binwalk,naterh/binwalk,Eih3/binwalk,MaiPhuoc/binwalk,devttys0/binwalk,UniqMartin/binwalk,draekko/binwalk,cristianst85/binwalk,foreni-packages/binwalk,thx0701/binwalk,zhuyue1314/binwalk,pombredanne/binwalk,pyq881120/binwalk,itsens/binwalk,cappiewu/binwalk,emprovements/binwalk,UniqMartin/binwalk,foreni-packages/binwalk,goofwear/binwalk,thx0701/binwalk,AmesianX/binwalk,pyq881120/binwalk,sviehb/binwalk,jiangbing9293/binwalk,draekko/binwalk,gale320/binwalk,MaiPhuoc/binwalk,cristianst85/binwalk,hyper-xx/binwalk,chubbymaggie/binwalk,ddcc/binwalk,sundhaug92/binwalk,hyper-xx/binwalk,cappiewu/binwalk,gale320/binwalk,anthraxx/binwalk,emprovements/binwalk,peterdocter/binwalk,WooyunDota/binwalk