[GC] Fix data type in IOPrioritySizePolicy #229

Job	Run time
Prerequisites / Prerequisites	45s
Prerequisites / Check Commit Message	0s
windows-x64 / build (debug)	13m 26s
linux-x64 / build (debug)	24m 51s
linux-aarch64 / build (debug)	17m 39s
riscv64 / build (release)	24m 12s
windows-x64 / build (release)	13m 34s
linux-aarch64 / build (release)	12m 24s
linux-x64 / build (release)	21m 4s
windows-x64	0s
linux-aarch64 / test (jdk/tier1 part 1)	5m 14s
linux-aarch64 / test (jdk/tier1 part 2)	8m 12s
linux-aarch64 / test (jdk/tier1 part 3)	4m 3s
linux-aarch64 / test (langtools/tier1)	7m 3s
linux-aarch64 / test (hs/tier1 common)	2m 35s
linux-aarch64 / test (hs/tier1 compiler)	14m 28s
linux-aarch64 / test (hs/tier1 gc)	10m 28s
linux-aarch64 / test (hs/tier1 runtime)	5m 13s
linux-aarch64 / test (hs/tier1 serviceability)	3m 45s
linux-aarch64 / test (dragonwell/hs feature)	5m 20s
linux-aarch64 / test (dragonwell/jdk feature)	3m 26s
linux-x64 / test (jdk/tier1 part 1)	11m 23s
linux-x64 / test (jdk/tier1 part 2)	10m 59s
linux-x64 / test (jdk/tier1 part 3)	4m 45s
linux-x64 / test (langtools/tier1)	19m 29s
linux-x64 / test (hs/tier1 common)	2m 9s
linux-x64 / test (hs/tier1 compiler)	21m 41s
linux-x64 / test (hs/tier1 gc)	22m 35s
linux-x64 / test (hs/tier1 runtime)	7m 8s
linux-x64 / test (hs/tier1 serviceability)	3m 35s
linux-x64 / test (dragonwell/hs feature)	5m 20s
linux-x64 / test (dragonwell/jdk feature)	4m 39s
Remove bundle artifacts	0s
	5h 11m 25s

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