Write times only when they are defined

(Writing times when the Fortran executable did not run was justified
by the existence of `elapsed_cat`.)

Inst_eddies/inst_eddies_in.py

@@ -92,9 +92,9 @@ while True:
 
         os.remove("h.nc")
         os.remove("uv.nc")
+        writer.writerow([my_date, elapsed_NCO, elapsed_Fortran])
     else:
         print("inst_eddies.py: Missing file:", nc_file)
-        elapsed_NCO, elapsed_Fortran = - 1, - 1
 
     for orient in ["cyclo", "anti"]:
         with open(f"SHPC_{orient}/ishape_last.txt", "a") as ishape_last, \
@@ -102,7 +102,6 @@ while True:
             n_shapes = len(shpr)
             ishape_last.write(str(n_shapes - 1) + "\n")
 
-    writer.writerow([my_date, elapsed_NCO, elapsed_Fortran])
     my_date += datetime.timedelta(1)
     if my_date > last_date: break
     basename = my_date.strftime(args.template)