RedfishPkg/HiiUtilityLib: Fix incorrect type assignment #7358

Job	Run time
Analyze (ArmPkg, IA32,X64)	3m 59s
Analyze (CryptoPkg, IA32)	16m 37s
Analyze (CryptoPkg, X64)	17m 39s
Analyze (DynamicTablesPkg, IA32,X64)	10m 54s
Analyze (FatPkg, IA32,X64)	6m 23s
Analyze (FmpDevicePkg, IA32,X64)	6m 49s
Analyze (IntelFsp2Pkg, IA32,X64)	9m 38s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	10m 48s
Analyze (MdeModulePkg, IA32)	13m 8s
Analyze (MdeModulePkg, X64)	14m 19s
Analyze (MdePkg, IA32,X64)	8m 29s
Analyze (PcAtChipsetPkg, IA32,X64)	8m 15s
Analyze (PrmPkg, IA32,X64)	9m 39s
Analyze (SecurityPkg, IA32,X64)	12m 41s
Analyze (ShellPkg, IA32,X64)	13m 14s
Analyze (SourceLevelDebugPkg, IA32,X64)	8m 44s
Analyze (StandaloneMmPkg, IA32,X64)	8m 15s
Analyze (UefiCpuPkg, IA32,X64)	9m 6s
Analyze (UnitTestFrameworkPkg, IA32,X64)	6m 42s
	3h 15m 19s

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