Per #2286, in PointStatVxOpt::n_txt_row() modify the vect_flag logic …

…to exactly match the logic used in point_stat.cc. When running test for this issue I'd come across a runtime error for vl1l2 output since the logic in the 2 spots was slightly different.

src/tools/core/point_stat/point_stat_conf_info.cc

@@ -1112,8 +1112,8 @@ int PointStatVxOpt::n_txt_row(int i_txt_row) const {
    if(output_flag[i_txt_row] == STATOutputType_None) return(0);
 
    bool prob_flag = vx_pd.fcst_info->is_prob();
-   bool vect_flag = (vx_pd.fcst_info->is_u_wind() &&
-                     vx_pd.obs_info->is_u_wind());
+   bool vect_flag = vx_pd.fcst_info->is_v_wind() &&
+                    vx_pd.fcst_info->uv_index() >= 0;
 
    int n_pd = get_n_msg_typ() * get_n_mask() * get_n_interp();