message: Fix a bug when logging slave trades
diff: @@ -596,7 +596,7 @@ def getTradePlayer(player, trade):
  return PlayerUtil.getPlayer(trade.iData).getCivilizationShortDescription(0)
  def getTradeUnit(player, trade):
  - return gc.getUnitInfo(trade.iData).getText()
  + return PlayerUtil.getPlayer(player).getUnit(trade.iData).getName()
  def getTradePeaceDeal(player, trade):
  BugUtil.debug("TradeUtil - peace treaty has iData %d", trade.iData)
  