修改yunying活动

script/module/absAct/DropExchangeLogic.lua

@@ -108,6 +108,7 @@ function shopQuery(human)
 end
 
 function shopBuy(human, shopID, buyCnt)
+    if buyCnt <= 0 then return end
     local state,id,endTime, starTime = AbsActLogic.isStartedByType(human,  AbsActDefine.ABS_ACT_TYPE_6)
     if not state then return end
     local absActConfig = AbsActExcel.absActivity[id]