fix invalid assignment #2479

Job	Run time
activate	1s
build (ubuntu-latest, jruby-9.4.5.0, ~> 2.3.0)	1m 58s
build (ubuntu-latest, 2.7, ~> 2.3.0)	31s
build (ubuntu-latest, 3.0, ~> 2.3.0)	16s
build (windows-latest, jruby-9.4.5.0, ~> 2.3.0)	3m 26s
build (windows-latest, 2.7, ~> 2.3.0)	2m 3s
build (windows-latest, 3.0, ~> 2.3.0)	1m 14s
build (windows-latest, 3.3, ~> 2.3.0)	1m 52s
build (ubuntu-latest, truffleruby-22.2.0)	1m 41s
build (ubuntu-latest, jruby-9.2.21.0)	2m 0s
build (windows-latest, jruby-9.2.21.0)	2m 46s
build (macos-latest, 3.3)	1m 4s
build (ubuntu-latest, 2.7, ~> 1.0.0)	33s
build (ubuntu-latest, 2.7, ~> 5.2.0)	32s
build (ubuntu-latest, 2.7, ~> 1.2.0)	33s
build (ubuntu-latest, 2.7, ~> 2.0.0)	32s
build (ubuntu-latest, 3.3, primary)	39s
build:dependents	7s
	21m 48s

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