Use nbtdesc "level" field name consistently.
authorPeter Geoghegan <pg@bowt.ie>
Wed, 19 Apr 2023 19:15:15 +0000 (12:15 -0700)
committerPeter Geoghegan <pg@bowt.ie>
Wed, 19 Apr 2023 19:15:15 +0000 (12:15 -0700)
commit2584639653eec13726a25d6ea8a4b42153185723
tree6c4a25938b4e96caea5e0956eb0006bc61bb4f4b
parent50547a3fae0ce62e74c1d2175c7949937f2c69fc
Use nbtdesc "level" field name consistently.

The "lev" name that appeared in NEWROOT nbtree record desc output was
inconsistent with the symbol name from the underlying C struct.  It was
also inconsistent with nbtdesc output for other nearby record types with
similar level fields.

Standardize on "level" to make everything consistent.

Follow-up to commit 1c453cfd.
src/backend/access/rmgrdesc/nbtdesc.c