Possible array out of bounds in brw_vec4_nir.cpp

https://gitlab.freedesktop.org/mesa/mesa/-/blob/master/src/intel/compiler/brw_vec4_nir.cpp#L1000-1006

      float f[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
      bool is_scalar = true;

      for (unsigned i = 0; i < NIR_MAX_VEC_COMPONENTS; i++) {
         if (nir_alu_instr_channel_used(instr, idx, i)) {
            f[i] = nir_src_comp_as_float(instr->src[idx].src,
                                         instr->src[idx].swizzle[i]);

f is array with 4 elements but NIR_MAX_VEC_COMPONENTS(16) may access it in 15 element