message: Read the block signature when the block index is loaded
diff: @@ -203,6 +203,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts(boost::function<CBlockIndex*(const uint256
  pindexNew->nStakeModifier = diskindex.nStakeModifier;
  pindexNew->prevoutStake = diskindex.prevoutStake;
  pindexNew->nStakeTime = diskindex.nStakeTime; // qtum
  + pindexNew->vchBlockSig = diskindex.vchBlockSig; // qtum
  if (!CheckIndexProof(*pindexNew, Params().GetConsensus()))
  return error("LoadBlockIndex(): CheckIndexProof failed: %s", pindexNew->ToString());
  