pgsql: In pg_upgrade, fix a few place that used maloc/free rather than

In pg_upgrade, fix a few place that used maloc/free rather than
pg_malloc/pg_free.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/16e1ae77f9eb64ba7d292fd5f71e289a0fcaa854

Modified Files
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contrib/pg_upgrade/check.c | 2 +-
contrib/pg_upgrade/file.c | 8 ++++----
2 files changed, 5 insertions(+), 5 deletions(-)