pgsql: Fix typo.

[Amit Kapila]

Fix typo.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/dcfdf56e89a8d0b41874d495a44a4485e341f8c8

Modified Files
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src/backend/executor/execTuples.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)