pgsql: Replace static buf with a stack-allocated one in ReadControlFile

Replace static buf with a stack-allocated one in ReadControlFile

It's only used very locally within the function.

Reviewed-by: Robert Haas
Discussion: https://www.postgresql.org/message-id/7f86e06a-98c5-4ce3-8ec9-3885c8de0358@iki.fi

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/da8a587e2e225be1ccf838a330e342bda6848874

Modified Files
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src/backend/access/transam/xlog.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)