pgsql: Always call ExecShutdownNode() if appropriate.

Always call ExecShutdownNode() if appropriate. Call ExecShutdownNode() after ExecutePlan()'s loop, rather than at each break. We had forgotten to do that in one case. The omission caused intermittent "temporary file leak" warnings from multi-batch parallel hash joins with a LIMIT clause. Back-p

pgsql: Always call ExecShutdownNode() if appropriate.

Always call ExecShutdownNode() if appropriate. Call ExecShutdownNode() after ExecutePlan()'s loop, rather than at each break. We had forgotten to do that in one case. The omission caused intermittent "temporary file leak" warnings from multi-batch parallel hash joins with a LIMIT clause. Back-p

pgsql: Always call ExecShutdownNode() if appropriate.

Always call ExecShutdownNode() if appropriate. Call ExecShutdownNode() after ExecutePlan()'s loop, rather than at each break. We had forgotten to do that in one case. The omission caused intermittent "temporary file leak" warnings from multi-batch parallel hash joins with a LIMIT clause. Back-p