Merge pull request #1184 from ruby/pz-dead-finalizer-spec #1715

Job	Run time
RuboCop	26s
specs (ubuntu, 3.0.6)	1m 32s
specs (ubuntu, 3.1.4)	1m 30s
specs (ubuntu, 3.2.2)	1m 30s
specs (ubuntu, 3.3.0)	1m 28s
specs (macos, 3.0.6)	1m 21s
specs (macos, 3.1.4)	1m 19s
specs (macos, 3.2.2)	1m 10s
specs (macos, 3.3.0)	1m 13s
specs (windows, 3.0.6)	3m 41s
specs (windows, 3.1.4)	4m 15s
specs (windows, 3.2.2)	6m 23s
specs (windows, 3.3.0)	5m 27s
specs (ubuntu, 3.3.0, --enable-frozen-string-literal)	1m 33s
	32m 48s

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