pgsql: Use logical operator && instead of & in vacuumparallel.c.

Use logical operator && instead of & in vacuumparallel.c.

As such the current usage of & won't produce incorrect results but it
would be better to use && to short-circuit the evaluation of second
condition when the same is not required.

Author: Ranier Vilela
Reviewed-by: Tom Lane, Bharath Rupireddy
Backpatch-through: 15, where it was introduced
Discussion: https://postgr.es/m/CAEudQApL8QcoYwQuutkWKY_h7gBY8F0Xs34YKfc7-G0i83K_pw@mail.gmail.com

Branch
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REL_15_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/254d79f0b23dfe107594c90ee8375165422db2c4

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