pgsql: Remove unnecessary (char *) casts [mem]

Remove unnecessary (char *) casts [mem]

Remove (char *) casts around memory functions such as memcmp(),
memcpy(), or memset() where the cast is useless.  Since these
functions don't take char * arguments anyway, these casts are at best
complicated casts to (void *), about which see commit 7f798aca1d5.

Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Discussion: https://www.postgresql.org/message-id/flat/fd1fcedb-3492-4fc8-9e3e-74b97f2db6c7%40eisentraut.org

Branch
------
master

Details
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https://git.postgresql.org/pg/commitdiff/827b4060a8e35047c1adc9ca2ab3d8e7ad905df0

Modified Files
--------------
contrib/pg_trgm/trgm_gist.c                 |  6 +++---
contrib/xml2/xpath.c                        |  4 ++--
src/backend/access/common/heaptuple.c       |  6 +++---
src/backend/access/heap/heapam_xlog.c       | 12 ++++++------
src/backend/access/table/toast_helper.c     |  2 +-
src/backend/access/transam/xlog.c           |  2 +-
src/backend/access/transam/xlogreader.c     |  2 +-
src/backend/bootstrap/bootstrap.c           |  4 ++--
src/backend/libpq/be-secure-gssapi.c        |  2 +-
src/backend/replication/logical/decode.c    |  8 ++------
src/backend/storage/buffer/bufmgr.c         |  2 +-
src/backend/storage/buffer/localbuf.c       |  2 +-
src/backend/storage/file/fd.c               |  4 ++--
src/backend/storage/page/bufpage.c          |  8 ++++----
src/backend/tcop/postgres.c                 |  4 ++--
src/backend/utils/activity/backend_status.c |  4 ++--
src/interfaces/ecpg/compatlib/informix.c    |  2 +-
src/interfaces/ecpg/ecpglib/misc.c          | 14 +++++++-------
src/interfaces/libpq/fe-lobj.c              |  2 +-
src/interfaces/libpq/fe-secure-gssapi.c     |  2 +-
20 files changed, 44 insertions(+), 48 deletions(-)