fix 50 to 40

Helius

2022-02-21 f54f8a92c09a2cd76b3bbb796df680215b63ab8a

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<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 
<mapper namespace="com.xzx.gc.user.mapper.UserDeviceMapper"> 
</mapper>