pgsql: Fix potential coredump on bad locale value in pg_upgrade.

Fix potential coredump on bad locale value in pg_upgrade.

Thinko in error report (and a typo in the message text, too).  We're
failing anyway, but it would be good to print something useful first.
Noted while reviewing a patch to make pg_upgrade's locale code laxer.

Branch
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REL9_3_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/c1b242b1646137450860cb80683de27be2d86fae

Modified Files
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contrib/pg_upgrade/check.c |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)