`port_range` lvar is not defined #1727

Job	Run time
ruby-versions / Generate Ruby versions	4s
test (2.7)	2m 8s
test (3.0)	2m 17s
test (3.1)	1m 42s
test (3.2)	1m 57s
test (3.3)	1m 37s
test (debug)	4m 45s
test (head)	1m 46s
	16m 16s

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