pgsql: Fix two oversights from 9ebe0572 which refactored cluster_rel

Fix two oversights from 9ebe0572 which refactored cluster_rel

The recheck option became a no-op as ClusterOption failed to set proper
values for each element.  There was a second code path where local
options got overwritten.

Both issues have been spotted by Coverity.

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/9f7ba88aa447a0a35006d877eec897b917d1c6c3

Modified Files
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src/backend/commands/vacuum.c  | 6 +++---
src/include/nodes/parsenodes.h | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)