[Python-checkins] Python Regression Test Failures refleak (2)

[Neal Norwitz]

More important issues:
----------------------
test_io leaked [237, 237, 237] references, sum=711
test_memoryio leaked [267, 267, 267] references, sum=801

Less important issues:
----------------------
test_asynchat leaked [126, -126, 0] references, sum=0
test_file2k leaked [-8, -83, 0] references, sum=-91
test_smtplib leaked [0, -6, 94] references, sum=88
test_sys leaked [0, 42, -21] references, sum=21
test_threading leaked [48, 48, 48] references, sum=144
test_threadsignals leaked [-8, 8, 0] references, sum=0