change return value of vlistInqVarEnsemble()

src/stream_gribapi.c

@@ -2920,7 +2920,7 @@ size_t gribapiEncode(int varID, int levelID, int vlistID, int gridID, int zaxisI
 
   if ( ! gc->init ) gribapiDefParam(editionNumber, gh, param, name);
   /*
-  if( !vlistInqVarEnsemble( vlistID,  varID, &ensID, &ensCount, &forecast_type ) )
+  if( vlistInqVarEnsemble( vlistID,  varID, &ensID, &ensCount, &forecast_type ) )
     {
       GRIB_CHECK(grib_set_long(gh, "typeOfEnsembleForecast", forecast_type ), 0);
       GRIB_CHECK(grib_set_long(gh, "numberOfForecastsInEnsemble", ensCount ), 0);