pgsql: Fix typo

Fix typo

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/6a03369a71d4a7dc5b8d928aab775ddd28b72494

Modified Files
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src/backend/storage/ipc/procarray.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)