RedfishPkg/HiiUtilityLib: Fix incorrect type assignment #7359

Job	Run time
Analyze (ArmPkg, IA32,X64)	4m 6s
Analyze (CryptoPkg, IA32)	15m 59s
Analyze (CryptoPkg, X64)	17m 13s
Analyze (DynamicTablesPkg, IA32,X64)	9m 44s
Analyze (FatPkg, IA32,X64)	10m 16s
Analyze (FmpDevicePkg, IA32,X64)	9m 18s
Analyze (IntelFsp2Pkg, IA32,X64)	10m 8s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	9m 31s
Analyze (MdeModulePkg, IA32)	14m 7s
Analyze (MdeModulePkg, X64)	15m 7s
Analyze (MdePkg, IA32,X64)	8m 18s
Analyze (PcAtChipsetPkg, IA32,X64)	9m 30s
Analyze (PrmPkg, IA32,X64)	10m 9s
Analyze (SecurityPkg, IA32,X64)	11m 41s
Analyze (ShellPkg, IA32,X64)	12m 16s
Analyze (SourceLevelDebugPkg, IA32,X64)	9m 37s
Analyze (StandaloneMmPkg, IA32,X64)	9m 38s
Analyze (UefiCpuPkg, IA32,X64)	11m 17s
Analyze (UnitTestFrameworkPkg, IA32,X64)	6m 37s
	3h 24m 32s

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