泛型对象反序列化获取对象类型时，直接返回了里层的泛型，应该去掉return改为在外层统一返回外层的泛型

[wuzihao-j]

问题：#3448
现象：嵌套泛型反序列化失败
原因：泛型对象反序列化获取对象类型时，直接返回了里层的泛型，导致在反序列化时字符串和泛型类型不一致，应该去掉return改为在外层统一返回外层的泛型

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[wenshao]

问题已修复，谢谢你的参与，希望你以后能继续提交代码。