Fix potential undefined error in logging
Fix potential undefined error in logging

icodegame/codecombat,fabichoi/codecombat,Zerrien/codecombat,zhangxiuquan/codecombat,zhangxiuquan/codecombat,codecombat/codecombat,Zerrien/codecombat,fabichoi/codecombat,edtrist/codecombat,javatlacati/codecombat,tpai/codecombat,zhangxiuquan/codecombat,edtrist/codecombat,zhangxiuquan/codecombat,fabichoi/codecombat,javatlacati/codecombat,javatlacati/codecombat,Zerrien/codecombat,duybkict/codecombat,kidaa/codecombat,edtrist/codecombat,codecombat/codecombat,codecombat/codecombat,probil/codecombat,codecombat/codecombat,duybkict/codecombat,tpai/codecombat,duybkict/codecombat,jeremiahyan/codecombat,VilkkuV/codecombat,probil/codecombat,duybkict/codecombat,icodegame/codecombat,codecombat/codecombat,icodegame/codecombat,icodegame/codecombat,VilkkuV/codecombat,jeremyprice/codecombat,kidaa/codecombat,Zerrien/codecombat,fabichoi/codecombat,javatlacati/codecombat,jeremiahyan/codecombat,kidaa/codecombat,probil/codecombat,kidaa/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,jeremyprice/codecombat,edtrist/codecombat,probil/codecombat,jeremyprice/codecombat,VilkkuV/codecombat,jeremyprice/codecombat,tpai/codecombat,VilkkuV/codecombat,tpai/codecombat,jeremiahyan/codecombat