syz-cluster: fix hash comparison bugs #17614

Job	Run time
aux	3m 45s
build	3m 16s
dashboard	2m 9s
old	7m 15s
gvisor	3m 56s
race_dashboard	3m 28s
race	7m 12s
arch (presubmit_arch_freebsd)	6m 18s
arch (presubmit_arch_netbsd)	3m 43s
arch (presubmit_arch_darwin)	3m 31s
arch (presubmit_arch_linux)	10m 36s
arch (presubmit_arch_openbsd)	3m 44s
arch (presubmit_arch_executor)	3m 18s
arch (presubmit_arch_windows)	3m 28s
	1h 5m 39s

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