https://github.com/bitcoin/bitcoin/blob/68f3c7eb080e461cfeac37f8db7034fe507241d0/src/prevector.h#L152-L158

I'm opening an issue as its fix is too tiny to become a pull request.

Can be solved by renaming the struct to
```c
     struct indirect_contents { 
         size_type capacity; 
         char* indirect; 
     }; 
```
nBlockSequenceId = 1;
    setBlockIndexCandidates.clear();
}
void UnloadBlockIndex()
{
    LOCK(cs_main);
    g_chainman.Unload();
    pindexBestInvalid = nullptr;
    pindexBestHeader = nullptr;
    mempool.clear();
    vinfoBlockFile.clear();
    nLastBlockFile = 0;
    setDirtyBlockIndex.clear();
    setDirtyFileInfo.clear();
    versionbitscache.Clear();
    for (int b = 0; b < VERSIONBITS_NUM_BITS; b++) {
        warningcache[b].clear();
    }
    fHavePruned = false;
}
bool LoadBlockIndex(const CChainParams& chainparams)