pgsql: Remove useless casts to Pointer

Remove useless casts to Pointer

in arguments of memcpy() and memmove() calls

Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Discussion: /messages/by-id/4154950a-47ae-4223-bd01-1235cc50e933@eisentraut.org

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/623801b3bdb4e16df39f945b6aa5f109744c7b6b

Modified Files
--------------
contrib/bloom/blutils.c | 2 +-
contrib/bloom/blvacuum.c | 3 +--
src/backend/access/gin/ginxlog.c | 2 +-
src/backend/utils/adt/multirangetypes.c | 2 +-
4 files changed, 4 insertions(+), 5 deletions(-)