fix zeroing in xmalloc
fix zeroing in xmalloc

scarito/zmap,willscott/zmap,coolacid/zmap,scarito/zmap,unixfreaxjp/zmap,KeelanArrendale/zmap,BobuSumisu/zmap,coolacid/zmap,3L3N4/zmap,zmap/zmap,BobuSumisu/zmap,3L3N4/zmap,djeraseit/zmap,KeelanArrendale/zmap,tdi/zmap,shakenetwork/zmap,eacha/zmap,zhuyue1314/zmap,scarito/zmap,coolacid/zmap,scarito/zmap-android,scarito/zmap-android,eacha/zmap,shakenetwork/zmap,tdi/zmap,unixfreaxjp/zmap,zhuyue1314/zmap,willscott/zmap,unixfreaxjp/zmap,eacha/zmap,KeelanArrendale/zmap,scarito/zmap-android,unixfreaxjp/zmap,zhuyue1314/zmap,zhuyue1314/zmap,djeraseit/zmap,potatozhao/zmap,3L3N4/zmap,potatozhao/zmap,zhuyue1314/zmap,KeelanArrendale/zmap,BobuSumisu/zmap,willscott/zmap,cicku/zmap,potatozhao/zmap,BobuSumisu/zmap,potatozhao/zmap,3L3N4/zmap,willscott/zmap,cicku/zmap,zmap/zmap,shakenetwork/zmap,coolacid/zmap,djeraseit/zmap,eacha/zmap,scarito/zmap-android,willscott/zmap,BobuSumisu/zmap,potatozhao/zmap,cicku/zmap,tdi/zmap,eacha/zmap,shakenetwork/zmap,zmap/zmap,coolacid/zmap,KeelanArrendale/zmap,unixfreaxjp/zmap,shakenetwork/zmap,3L3N4/zmap,cicku/zmap,djeraseit/zmap,scarito/zmap,tdi/zmap,djeraseit/zmap,scarito/zmap,cicku/zmap,tdi/zmap