Fix broken logic in lazy_vacuum_heap.
As noted by Tom Lane, the previous coding in this area, which I
introduced in commit bbb6e559c4ea0fb4c346beda76736451dc24eb4e, was
poorly tested and caused the vacuum's second heap to go into what would
have been an infinite loop but for the fact that it eventually caused a
memory allocation failure. This version seems to work better.
src/backend/commands/vacuumlazy.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
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