[issue31130] test_idle: idlelib.configdialog leaks references

[Terry J. Reedy]

Terry J. Reedy added the comment:


New changeset 9d7d928b5853b921ed27f1e535dfe8174169854c by Terry Jan Reedy in branch '3.6':
[3.6] bpo-31130: IDLE -- stop leaks in test_configdialog. (GH-3016) (#3018)
https://github.com/python/cpython/commit/9d7d928b5853b921ed27f1e535dfe8174169854c


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