Fixed macro guard for gemv

Author: Alcpz

ggml/src/ggml-cpu/arch/arm/repack.cpp

@@ -525,7 +525,7 @@ void ggml_gemv_q4_K_8x8_q8_K(int                        n,
     UNUSED(ncols_interleaved);
     UNUSED(blocklen);
 
-#if defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_DOTPROD)
+#if ! ((defined(_MSC_VER)) && ! defined(__clang__)) && defined(__aarch64__) && defined(__ARM_NEON) && defined(__ARM_FEATURE_DOTPROD)
     constexpr int col_pairs = ncols_interleaved / 2;
     const uint8x16_t m4b = vdupq_n_u8(0x0f);