unused-import for names used in class keyword arguments inside if expressions

[marmistrz]

Update 06/25/22: see comment for an example that still reproduces on 2.14.

Steps to reproduce

Lint the following code:

from abc import ABCMeta

class foo(meta=ABCMeta):
    pass

Current behavior

W:  1, 0: Unused ABCMeta imported from abc (unused-import)

Expected behavior

No unused-import error.

pylint --version output

pylint 1.7.2, 
astroid 1.5.3
Python 3.6.2 (default, Jul 20 2017, 03:52:27) 
[GCC 7.1.1 20170630]