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(parent: 1c5d927) | patch

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 the end of memory, resulting
in SIGSEGV.

Detected through valgrind testing. Odd that the buildfarm's valgrind
critters haven't noticed.

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