Fix BAD Block when syncing to Baklava

Geth runs statedb.IntermediateRoot() after each tx. And it seems
we should do the same after running the Randomness (which is done
before the tx).

This seems to modify statedb and the state root. If we don't do that
we had an error with block 500 & 971 with invalidad stateRoot.

core/state_processor.go

@@ -72,6 +72,7 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 		if err != nil {
 			return nil, nil, 0, err
 		}
+		statedb.IntermediateRoot(p.config.IsEIP158(header.Number))
 	}
 	// Iterate over and process the individual transactions
 	for i, tx := range block.Transactions() {