pgsql: Fix typos in comments

Fix typos in comments

The changes done in this commit impact comments with no direct
user-visible changes, with fixes for incorrect function, variable or
structure names.

Author: Alexander Lakhin
Discussion: https://postgr.es/m/e8c38840-596a-83d6-bd8d-cebc51111572@gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/8961cb9a0315fa23458587b3df547ca8d8e00f85

Modified Files
--------------
config/config.sub                               | 2 +-
contrib/amcheck/verify_nbtree.c                 | 2 +-
contrib/intarray/_int.h                         | 4 ++--
src/backend/access/gist/gistxlog.c              | 4 ++--
src/backend/access/heap/heapam.c                | 2 +-
src/backend/access/heap/heapam_handler.c        | 2 +-
src/backend/access/heap/pruneheap.c             | 5 ++---
src/backend/access/heap/vacuumlazy.c            | 2 +-
src/backend/access/nbtree/nbtsplitloc.c         | 2 +-
src/backend/access/transam/slru.c               | 6 +++---
src/backend/access/transam/xlogreader.c         | 4 ++--
src/backend/commands/opclasscmds.c              | 4 ++--
src/backend/commands/subscriptioncmds.c         | 4 ++--
src/backend/commands/tablecmds.c                | 6 +++---
src/backend/executor/nodeAgg.c                  | 2 +-
src/backend/jit/llvm/llvmjit_expr.c             | 4 ++--
src/backend/optimizer/plan/planagg.c            | 2 +-
src/backend/parser/gram.y                       | 2 +-
src/backend/partitioning/partbounds.c           | 2 +-
src/backend/partitioning/partdesc.c             | 2 +-
src/backend/replication/logical/reorderbuffer.c | 4 ++--
src/backend/replication/syncrep.c               | 2 +-
src/backend/storage/file/fd.c                   | 2 +-
src/backend/storage/ipc/latch.c                 | 2 +-
src/backend/storage/ipc/procarray.c             | 2 +-
src/backend/storage/lmgr/spin.c                 | 2 +-
src/backend/utils/activity/backend_status.c     | 2 +-
src/backend/utils/activity/pgstat_wal.c         | 2 +-
src/backend/utils/adt/acl.c                     | 4 ++--
src/backend/utils/adt/pg_locale.c               | 2 +-
src/backend/utils/adt/selfuncs.c                | 2 +-
src/backend/utils/mb/mbutils.c                  | 2 +-
src/bin/pg_rewind/rewind_source.h               | 2 +-
src/include/access/tableam.h                    | 2 +-
src/include/access/toast_helper.h               | 6 +++---
src/include/nodes/nodeFuncs.h                   | 2 +-
src/include/nodes/queryjumble.h                 | 4 ++--
src/include/pg_config_manual.h                  | 2 +-
src/interfaces/libpq/fe-protocol3.c             | 2 +-
src/interfaces/libpq/libpq-int.h                | 2 +-
src/pl/plperl/plperl.c                          | 2 +-
src/test/recovery/t/023_pitr_prepared_xact.pl   | 2 +-
src/test/subscription/t/004_sync.pl             | 2 +-
43 files changed, 59 insertions(+), 60 deletions(-)