pgsql: Fix for loop variables used with lengthof

Fix for loop variables used with lengthof

lengthof returns type size_t, but most for loops used int as a loop
variable. Fix that. This avoids possible warnings about
signed/unsigned mismatches under higher warning levels. (The compiler
will likely optimize these loops beyond recognition, so this shouldn't
affect the generated code much.)

Reviewed-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://www.postgresql.org/message-id/flat/d639aede-209f-412b-927a-d38d4848b370%40eisentraut.org

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/5f14f82280db4b0e49d774362854c9d362106484

Modified Files
--------------
contrib/dblink/dblink.c | 3 +--
src/backend/access/heap/heapam.c | 2 +-
src/backend/access/transam/parallel.c | 4 +---
src/backend/bootstrap/bootstrap.c | 2 +-
src/backend/catalog/objectaddress.c | 11 +++--------
src/backend/commands/typecmds.c | 3 +--
src/backend/main/main.c | 2 +-
src/backend/postmaster/bgworker.c | 4 +---
src/backend/postmaster/datachecksum_state.c | 4 ++--
src/backend/replication/logical/conflict.c | 2 +-
src/backend/utils/adt/amutils.c | 4 +---
src/backend/utils/adt/jsonb.c | 3 +--
src/backend/utils/adt/jsonpath_exec.c | 3 +--
.../utf8_and_iso8859/utf8_and_iso8859.c | 6 ++----
.../conversion_procs/utf8_and_win/utf8_and_win.c | 6 ++----
src/bin/initdb/initdb.c | 3 +--
src/bin/pg_dump/pg_dump.c | 2 +-
src/bin/pgbench/pgbench.c | 18 ++++++-----------
src/bin/psql/command.c | 6 ++----
src/bin/psql/tab-complete.in.c | 2 +-
src/common/unicode_norm.c | 4 +---
src/interfaces/libpq/fe-auth.c | 2 +-
src/interfaces/libpq/fe-connect.c | 23 +++++++++++++---------
src/pl/plpgsql/src/pl_scanner.c | 4 +---
src/port/pg_localeconv_r.c | 6 +++---
src/port/win32error.c | 4 +---
src/port/win32ntdll.c | 2 +-
src/test/modules/oauth_validator/validator.c | 2 +-
src/test/modules/test_escape/test_escape.c | 4 ++--
src/test/modules/test_integerset/test_integerset.c | 2 +-
src/test/modules/test_radixtree/test_radixtree.c | 2 +-
src/test/regress/regress.c | 2 +-
src/timezone/zic.c | 2 +-
33 files changed, 60 insertions(+), 89 deletions(-)