pgsql: Fix typos - Mailing list pgsql-committers

Fix typos

Branch
------
REL9_0_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/bebf0c1bec8b899223883d70031a1f32ec42cf91

Modified Files
--------------
contrib/pg_upgrade/pg_upgrade.c     |    2 +-
src/bin/pg_resetxlog/pg_resetxlog.c |    2 +-
2 files changed, 2 insertions(+), 2 deletions(-)