gribapiAddRecord: init longname and units

src/stream_gribapi.c

@@ -656,6 +656,10 @@ void gribapiAddRecord(int streamID, int param, grib_handle *gh,
   if ( prec > 32 ) prec = DATATYPE_PACK32;
   if ( prec <  0 ) prec = DATATYPE_PACK;
 
+  name[0] = 0;
+  longname[0] = 0;
+  units[0] = 0;
+
   vlen = 256;
   GRIB_CHECK(grib_get_string(gh, "shortName", name, &vlen), 0);
   if      ( vlen == 8 && memcmp(name, "unknown", vlen) == 0 ) name[0] = 0;