message: vertexcodec: Fix MSVC AVX512 build
  Instead of using gcc intrinsic __builtin_popcount we now use
  _mm_popcnt_u32 which is available in MSVC as well.
diff: #define SIMD_SSE
  #endif
  -#if defined(__AVX512VBMI2__)
  +#if defined(__AVX512VBMI2__) && defined(__POPCNT__)
  #undef SIMD_SSE
  #define SIMD_AVX
  #endif
  @@ -553,7 +553,7 @@ static const unsigned char* decodeBytesGroupSimd(const unsigned char* data, unsi
  _mm_storeu_si128(reinterpret_cast<__m128i*>(buffer), result);
  - return skip + __builtin_popcount(mask16);
  + return skip + _mm_popcnt_u32(mask16);
  }
  case 3:
  