Remove useless casts to (void *) in hash_search() calls
Some of these appear to be leftovers from when hash_search() took a
char * argument (changed in
5999e78fc45dcb91784b64b6e9ae43f4e4f68ca2).
Since after this there is some more horizontal space available, do
some light reformatting where suitable.
Reviewed-by: Corey Huinker <corey.huinker@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/
fd9adf5d-b1aa-e82f-e4c7-
263c30145807%40enterprisedb.com