Undefined name 'line' in text2bin.py

[cclauss]

https://github.com/IBM/MAX-Word-Embedding-Generator/blob/master/text2bin.py#L73

Python 2's scoping rules would allow line to be visible after the list comprehension was completed but Python 3's scoping rules do not allow this.

flake8 testing of https://github.com/IBM/MAX-Word-Embedding-Generator on Python 3.7.1

$ flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics

./text2bin.py:73:58: F821 undefined name 'line'
        if any(part[0] != token for part in parts[1:] or line[0] == ''):
                                                         ^
1     F821 undefined name 'line'
1