pylint incorrectly warns about threading.Lock.locked

[vlovich]

Steps to reproduce

1. test.py

import threading
l = threading.Lock()
l.locked()

2. pylint -E test.py

Current behavior

************* Module test
test.py:3:0: E1101: Instance of 'lock' has no 'locked' member (no-member)

Expected behavior

Shouldn't error because Lock is defined to have a locked() function.

pylint --version output

pylint 2.3.1
astroid 2.2.3
Python 3.7.2 (default, Feb 13 2019, 15:31:10)
[Clang 10.0.0 (clang-1000.11.45.5)]