Fix type comparison for gh #29439

Job	Run time
syntax	1m 18s
vendored gems	40s
tap syntax	8m 13s
docker	6m 49s
cask audit	3m 9s
formula audit	6m 49s
test default formula (Ubuntu 22.04)	4m 31s
test default formula (Ubuntu 20.04)	6m 22s
tests (online)	4m 45s
update-test (Ubuntu 22.04)	22s
test default formula (macOS 13 x86_64)	3m 51s
tests (generic OS)	4m 46s
update-test (macOS 13)	28s
test default formula (macOS 14 arm64)	1m 32s
tests (Ubuntu 22.04)	4m 45s
tests (Ubuntu 20.04)	4m 45s
tests (macOS 13 x86_64)	4m 43s
tests (macOS 14 arm64)	4m 24s
	1h 12m 12s

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