pgsql: Avoid fetching past the end of the indoption array.

Avoid fetching past the end of the indoption array. pg_get_indexdef_worker carelessly fetched indoption entries even for non-key index columns that don't have one. 99.999% of the time this would be harmless, since the code wouldn't examine the value ... but some fine day this will be a fetch off

pgsql: Avoid fetching past the end of the indoption array.

Avoid fetching past the end of the indoption array. pg_get_indexdef_worker carelessly fetched indoption entries even for non-key index columns that don't have one. 99.999% of the time this would be harmless, since the code wouldn't examine the value ... but some fine day this will be a fetch off