修复bug：退出客户端时连续多次点击返回键导致重复动画效果无法退出#47
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lichen228 wants to merge 1 commit intoeoecn:masterfrom
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修复bug：退出客户端时连续多次点击返回键导致重复动画效果无法退出#47lichen228 wants to merge 1 commit intoeoecn:masterfrom lichen228:master
lichen228 wants to merge 1 commit intoeoecn:masterfrom
lichen228:master
