MicroCore.h:135:66: error: could not convert ‘cryptonote::Block
After most recent batch of monero PRs:

```
In file included from /home/mwo2/openmonero/src/db/../CurrentBlockchainStatus.h:6,
                 from /home/mwo2/openmonero/src/db/MySqlAccounts.cpp:9:
/home/mwo2/openmonero/src/db/../MicroCore.h: In member function ‘virtual std::vector<long unsigned int, std::allocator<long unsigned int> > xmreg::MicroCore::get_tx_amount_output_indices(const uint64_t&) const’:
/home/mwo2/openmonero/src/db/../MicroCore.h:135:66: error: could not convert ‘cryptonote::BlockchainDB::get_tx_amount_output_indices(((uint64_t)tx_id), 1)’ from ‘vector<std::vector<long unsigned int, std::allocator<long unsigned int> >,allocator<std::vector<long unsigned int, std::allocator<long unsigned int> >>>’ to ‘vector<long unsigned int,allocator<long unsigned int>>’
         return core_storage.get_db().get_tx_amount_output_indices(tx_id);
```