fix: Intel compiler's warning for XXH_ASSERT() #701

Job	Run time
Linux x64 check results consistency	24s
macos-11	32s
macos-12	36s
Linux x64 misc tests	1m 39s
CC=cc, ubuntu-latest	1m 59s
CC=gcc, ubuntu-latest	1m 57s
CC=gcc-12, ubuntu-22.04	1m 29s
CC=gcc-11, ubuntu-22.04	1m 20s
CC=gcc-10, ubuntu-22.04	1m 29s
CC=gcc-9, ubuntu-22.04	1m 50s
CC=gcc-8, ubuntu-20.04	1m 16s
CC=gcc-7, ubuntu-20.04	1m 46s
CC=clang, ubuntu-latest	1m 38s
CC=clang-12, ubuntu-22.04	1m 17s
CC=clang-11, ubuntu-22.04	1m 31s
CC=clang-10, ubuntu-20.04	1m 39s
CC=clang-9, ubuntu-20.04	1m 24s
CC=clang-8, ubuntu-20.04	1m 21s
CC=clang-7, ubuntu-20.04	1m 24s
CC=clang-6.0, ubuntu-20.04	1m 38s
QEMU ARM	2m 20s
QEMU AARCH64	7m 9s
QEMU PPC64LE	1m 49s
QEMU PPC64	1m 46s
QEMU S390X	2m 20s
QEMU MIPS	1m 41s
QEMU M68K	1m 24s
QEMU RISC-V	1m 18s
QEMU ARM, gcc-10	1m 45s
QEMU AARCH64, gcc-10	4m 57s
QEMU PPC64LE, gcc-10	1m 58s
QEMU PPC64, gcc-10	1m 36s
QEMU S390X, gcc-10	2m 6s
QEMU MIPS, gcc-10	1m 36s
QEMU ARM, gcc-9	2m 0s
QEMU PPC64LE, gcc-9	1m 34s
QEMU PPC64, gcc-9	1m 55s
QEMU S390X, gcc-9	2m 2s
QEMU MIPS, gcc-9	1m 28s
QEMU ARM, gcc-8	1m 45s
QEMU PPC64LE, gcc-8	1m 41s
QEMU PPC64, gcc-8	1m 39s
QEMU S390X, gcc-8	2m 3s
Windows mingw64	4m 18s
Windows mingw32	2m 54s
VC++ 2022, x64	2m 13s
VC++ 2022, Win32	2m 26s
VC++ 2022, ARM	2m 4s
VC++ 2022, ARM64	1m 52s
VC++ 2019, x64	2m 13s
VC++ 2019, Win32	1m 55s
VC++ 2019, ARM	2m 39s
VC++ 2019, ARM64	1m 25s
Linux x64 cmake unofficial build test	10s
Ubuntu Node 16.x WebAssembly/asm.js tests	59s
Ubuntu Node 17.x WebAssembly/asm.js tests	1m 6s
Ubuntu Node 18.x WebAssembly/asm.js tests	1m 13s
	1h 45m 28s

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