Fixed UnboundLocalError in extractor.py
Fixed UnboundLocalError in extractor.py

sundhaug92/binwalk,cappiewu/binwalk,pombredanne/binwalk,UniqMartin/binwalk,ddcc/binwalk,itsens/binwalk,cappiewu/binwalk,itsens/binwalk,Flameeyes/binwalk,sundhaug92/binwalk,pombredanne/binwalk,devttys0/binwalk,devttys0/binwalk,chubbymaggie/binwalk,Flameeyes/binwalk,UniqMartin/binwalk,chubbymaggie/binwalk,ddcc/binwalk