Fix crash when verifying corrupted token #620

Job	Run time
linux-integration	3m 51s
unit-tests / api-breakage	1m 55s
unit-tests / linux-unit (swift:5.9-jammy)	28s
unit-tests / linux-unit (swift:5.10-noble)	27s
unit-tests / linux-unit (swift:6.0-noble)	1m 42s
unit-tests / lint	35s
unit-tests / macos-unit (macos-14, latest-stable)	1m 27s
unit-tests / macos-unit (macos-15, latest-stable)	1m 32s
unit-tests / windows-unit (6)	4m 32s
unit-tests / ios-unit	1m 34s
unit-tests / musl	1m 37s
	19m 40s

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