Fix #463: Wrong target offset calculated when using bnd prefix #872

Job	Run time
Amalgamated build (Ubuntu 22.04)	5s
MSBuild build (windows-2022)	2m 26s
fuzzing (address)	6m 42s
CMake build + tests (macOS-latest )	27s
fuzzing (undefined)	6m 50s
CMake build + tests (macOS-latest -DZYAN_NO_LIBC=ON)	16s
fuzzing (memory)	7m 26s
CMake build + tests (windows-2022 )	44s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	33s
CMake build + tests (ubuntu-22.04 )	8s
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)	13s
CMake build + tests (windows-2022 -TClangCL)	1m 43s
	27m 39s

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