message: core:vsx fix sum of v_reduce_sad
diff: @@ -763,7 +763,7 @@ inline unsigned v_reduce_sad(const v_int8x16& a, const v_int8x16& b)
  inline unsigned v_reduce_sad(const v_uint16x8& a, const v_uint16x8& b)
  {
  vec_ushort8 ad = vec_absd(a.val, b.val);
  - VSX_UNUSED(vec_int4) sum = vec_sums(vec_int4_c(vec_unpackhu(ad)), vec_int4_c(vec_unpacklu(ad)));
  + VSX_UNUSED(vec_int4) sum = vec_sums(vec_int4_c(vec_unpackhu(ad)) + vec_int4_c(vec_unpacklu(ad)), vec_int4_z);
  return (unsigned)vec_extract(sum, 3);
  }
  inline unsigned v_reduce_sad(const v_int16x8& a, const v_int16x8& b)
  