Zonstat.cc: changed field2 initialisation.

src/Zonstat.cc

@@ -175,9 +175,13 @@ Zonstat(void *process)
   const auto nlatmax = gridInqYsize(gridID2);
 
   Field field1, field2;
-  field2.resize(nlatmax, 0.0);
-  field2.grid = gridID2;
-  field2.memType = MemType::Double;
+
+  auto zonVar = varList1[0];
+  zonVar.gridID = gridID2;
+  zonVar.gridsize = nlatmax;
+  zonVar.nlevels = 1;
+  zonVar.memType = MemType::Double;
+  field2.init(zonVar);
 
   Varray2D<size_t> remapIndices;
   Varray2D<double> remapWeights;