getAvailabilityOfRelativeTimes: added PDT 57 and 58.

ChangeLog

@@ -3,6 +3,10 @@
         * using CGRIBEX library version 1.9.5
 	* Version 1.9.9 released
 
+2020-08-28 Uwe Schulzweida
+
+	* getAvailabilityOfRelativeTimes: added PDT 57 and 58 [patch: Jochen Foerstner]
+
 2020-08-27 Uwe Schulzweida
 
 	* Added support for zaxis type ZAXIS_TROPOPAUSE

src/gribapi_utilities.c

@@ -271,7 +271,7 @@ static int getAvailabilityOfRelativeTimes(grib_handle* gh, bool* outHaveForecast
       //case 55 and case 40455 are the same: 55 is the proposed standard value, 40455 is the value in the local use range that is used by the dwd until the standard is updated.
       case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
       case 15: case 32: case 33: case 40: case 41: case 44: case 45: case 48:
-      case 51: case 53: case 54: case 55: case 56: case 60:
+      case 51: case 53: case 54: case 55: case 56: case 57: case 58: case 60:
       case 1000: case 1002: case 1100: case 40033: case 40455: case 40456:
         *outHaveForecastTime = true, *outHaveTimeRange = false;
         return 0;