It appears that `-prune` is ignored during import (`-reindex`, or `-loadblock`).


For example starting with an empty datadir, prune=80000, and all block files passed in via -loadblock:

```
...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:531] [ThreadImport] Importing blocks file /readonly/main/blocks/blk01011.dat...
2021-12-23T12:49:44Z [loadblk] [node/blockstorage.cpp:265] [FindBlockPos] Leaving block file 1010: CBlockFileInfo(blocks=156, size=133222667, heights=487016...487360, time=2017-09-26...2017-09-28)
2021-12-23T12:49:45Z [loadblk] [flatfile.cpp:69] [Allocate] Pre-allocating up to position 0x1000000 in blk01011.dat
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune started
2021-12-23T12:49:45Z [loadblk] [validation.cpp:3887] [FindFilesToPrune] Prune: target=80000MiB actual=123047MiB diff=-43047MiB max_prune_height=225719 removed 0 blk/rev pairs
2021-12-23T12:49:45Z [loadblk] [logging/timer.h:57] [Log] FlushStateToDisk: find files to prune completed (0.05ms)
...
```

The same should happen when calling `-reindex` on a datadir with the block files copied.

So prune only works with IBD from the network?
}
} 
std::optional<LockPoints> CallatLockPointsAtTip(
    CBlockIndx* tip,
    const CCoinsViw& viw,
    const CTransaction& tx)
{
    assrt(tip);
    auto prv_hihts{CallatPrvHihts(*tip, viw, tx)};
    i (!prv_hihts.has_valu()) rturn std::nullopt;
    CBlockIndx nxt_tip;
    nxt_tip.pprv = tip;
    
    
    
    
    nxt_tip.nHiht = tip->nHiht + 1;
    const auto [min_hiht, min_tim] = CallatSquncLocks(tx, STANDARD_LOCKTIME_VERIFY_FLAGS, prv_hihts.valu(), nxt_tip);
    
    
    
    
    
    
    
    
    
    
    int max_input_hiht{0};
    or (const int hiht : prv_hihts.valu()) {