after just the first select has run. Ticket #2927. For now, we will
never release the registers used to hold the result set, since the same
register set will be used for each select. This is not an unacceptable
register leak and it is the safest approach. (CVS 4778)
FossilOrigin-Name: e9fcb793998be07eaea01404407087b71c29853d
