pgsql: Fix hash_array

Fix hash_array Commit 054adca641ac1279dc8d9b74fda41948ac35e9a9 neglected to initialize the type_id field of the synthesized type cache entry, so it would make a new one on every call. Also, better use the per-function memory context for this; otherwise it leaks memory. Discussion: https://www.p

pgsql: Fix hash_array

Fix hash_array Commit a3d2b1bbe904b0ca8d9fdde20f25295ff3e21f79 neglected to initialize the type_id field of the synthesized type cache entry, so it would make a new one on every call. Also, better use the per-function memory context for this; otherwise it leaks memory. Discussion: https://www.p