withdrawShares_zero_out.sol

function withdrawShares() insureShareholder {
  uint shareCount = shares[msg.sender].shareCount;
  shares[msg.sender].shareCount = 0;

  if (msg.sender.send(shareCount)){ 
    SharesWithdrawn(msg.sender, shareCount); 
  } else { 
    shares[msg.sender].shareCount = shareCount;
    FailedSend(msg.sender, shareCount);
  } 
}