message: Fix masking of irrelevant bits in address groups.
diff: @@ -1005,7 +1005,7 @@ std::vector<unsigned char> CNetAddr::GetGroup() const
  nBits -= 8;
  }
  if (nBits > 0)
  - vchRet.push_back(GetByte(15 - nStartByte) | ((1 << nBits) - 1));
  + vchRet.push_back(GetByte(15 - nStartByte) | ((1 << (8 - nBits)) - 1));
  return vchRet;
  }
  