message: Remove null check for modifier.
diff: @@ -98,8 +98,6 @@ uint256 GetHashFromIndex(const CBlockIndex* pindexSample)
  return pindexSample->GetBlockPoWHash();
  uint256 hashProof = pindexSample->GetBlockPoSHash();
  - //it is possible that the block index won't have every hash needed (during the first transition to the protocol)
  - hashProof.SetNull();
  return hashProof;
  }
  @@ -157,8 +155,6 @@ bool ZerocoinStake::GetModifier(uint64_t& nStakeModifier, const CBlockIndex* pin
  //Get a sampling of entropy from this block. Rehash the sample, since PoW hashes may have lots of 0's
  uint256 hashSample = GetHashFromIndex(pindexSample);
  - if (hashSample.IsNull())
  - return error("%s: wallet does not have block indexes properly indexed.", __func__);
  hashSample = Hash(hashSample.begin(), hashSample.end());
  //Reduce the size of the sampling
  