min_wal_size > max_wal_size is accepted

Hello,

It is possible to startup an instance with min > max, without the system 
complaining:

mrechte=# show min_wal_size ;

2020-05-07 11:12:11.422 CEST [11098] LOG:  durée : 0.279 ms

  min_wal_size

--------------

  128MB

(1 ligne)



mrechte=# show max_wal_size ;

2020-05-07 11:12:12.814 CEST [11098] LOG:  durée : 0.275 ms

  max_wal_size

--------------

  64MB

(1 ligne)


This could be an issue ?