[PATCH] Fix argument in pg_indexam_progress_phasename()

Hello,

There is a oversight in pg_indexam_progress_phasename() since ab0dfc961b6 where the second argument is declared int8 in pg_proc.dat but gotten via PG_GETARG_INT32() in the C code.

This isn't much of a problem since 2a600a93c7b where Datums became 8 byte wide everywhere. However, this is an actual problem in 32-bit architecture in older PostgreSQL versions where int8 is passed by reference and returns bogus numbers. The side effect is that pg_stat_progress_create_index never shows the access method phasename. This should probably be backpatched.

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Markos Fountoulakis
PlanetScale Postgres Core Team