pgsql: Fix typos - Mailing list pgsql-committers

Fix typos

Branch
------
REL9_4_STABLE

Details
-------
http://git.postgresql.org/pg/commitdiff/367b34a22c47241d35bfba8b4e644443cc00bdbd

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