e439c6f0c3
In commit 8b08f7d4820f I added member relationId to IndexStmt struct. I'm now not sure why; DefineIndex doesn't need it, since the relation OID is passed as a separate argument anyway. Remove it. Also remove a redundant assignment to the relationId argument (it wasn't redundant when added by commit e093dcdd285, but should have been removed in commit 5f173040e3), and use relationId instead of stmt->relation when locking the relation in the second phase of CREATE INDEX CONCURRENTLY, which is not only confusing but it means we resolve the name twice for no reason.
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