Fix zydis not compiling under -Werror #941

Job	Run time
Amalgamated build (Ubuntu 22.04)	6s
MSBuild build (windows-2022)	1m 29s
CMake build + tests (macOS-latest )	12s
fuzzing (address)	11m 29s
CMake build + tests (macOS-latest -DZYAN_NO_LIBC=ON)	11s
CMake build + tests (windows-2022 )	1m 25s
fuzzing (undefined)	11m 20s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	1m 7s
fuzzing (memory)	11m 22s
CMake build + tests (ubuntu-22.04 )	17s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	6s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	7s
CMake build + tests (windows-2022 -TClangCL)	2m 3s
	41m 14s

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