Incorrect unused-import message

[andreymal]

def test1(s):
    from six import PY2, text_type
    return s.encode("utf-8") if PY2 else s

Current behavior

pylint_wat.py:2:4: W0611: Unused PY2 imported from six (unused-import)

Expected behavior

pylint_wat.py:2:4: W0611: Unused text_type imported from six (unused-import)

pylint --version output

pylint 2.3.1
astroid 2.2.5
Python 3.6.5 (default, Apr  1 2018, 05:46:30) 
[GCC 7.3.0]

[PCManticore]

Thank you, I can reproduce the issue.