Fix #463: Wrong target offset calculated when using bnd prefix #871

Job	Run time
Amalgamated build (Ubuntu 22.04)	7s
MSBuild build (windows-2022)	1m 31s
fuzzing (address)	6m 36s
CMake build + tests (macOS-latest )	29s
fuzzing (undefined)	6m 17s
CMake build + tests (macOS-latest -DZYAN_NO_LIBC=ON)	14s
fuzzing (memory)	7m 4s
CMake build + tests (windows-2022 )	1m 30s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	35s
CMake build + tests (ubuntu-22.04 )	7s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	8s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	15s
CMake build + tests (windows-2022 -TClangCL)	2m 4s
	26m 57s

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