3.8.3无障碍版中tap和gesture都导致内存不断上涨

测试代码：
clickPoint = function(x, y)
  local gesture = Gesture:new()
  local path = Path:new()
  path:setStartTime(0)
  path:setDurTime(1)
  path:addPoint(x, y)
  gesture:addPath(path)
  gesture:dispatch()
end

while true do
    --clickPoint(500,100)
    tap(500,100)
    sleep(100)
    collectgarbage("collect")
end

监测方法：
adb shell
watch -n 3 'ps|grep nx'

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