output lambda grids even in the first simulation year

src/cats/actions/action_population_grid_output.c

@@ -57,11 +57,6 @@ enum action_status action_save_adults(struct cats_grid *grid, struct cats_config
                 save_seeds_to_gdal(grid, conf);
         }
 
-        if (conf->time.year_current == conf->time.year_start) {
-                log_message(LOG_IMPORTANT, "skipping lambda grid output in year 0");
-                return ACTION_RUN;
-        }
-
         for (int32_t i = 0; i < conf->param_count; i++) {
                 if (conf->param[i].save_lambda_grid) {
                         save_lambda_grid(conf, grid, false);