-d option causes syntax error with -b

[tripleee]

The -d option produces a syntax error if you attempt to use it with -b; it refers to a variable nb_classes which was probably in scope before the code was refactored. (It does exist in some other methods but I am unable to figure out how to stitch it back together.)

 vnix$ ./langid/langid.py -d -b sample.txt
Traceback (most recent call last):
  File "./langid/langid.py", line 587, in <module>
    main()
  File "./langid/langid.py", line 558, in main
    writer.writerow(['path']+nb_classes)
NameError: global name 'nb_classes' is not defined

[saffsd]

Fixed in 65e35ea, thanks!

[carschno]

Looks like 600f530 re-introduces this issue.