Add comment pointing to PR in test

Author: aiudirog

pandas/tests/dtypes/test_inference.py

@@ -151,6 +151,8 @@ def foo():
 
 
 def test_is_list_like_iter_is_none():
+    # GH 43373
+    # is_list_like was yielding false positives with __iter__ == None
     class NotListLike:
         def __getitem__(self, item):
             return self