The in.Content of the custom log handler is lost

[hailaz]

因为这个提交删除了相关处理 https://github.com/gogf/gf/pull/2919/files#diff-0950fd3e63cfb4b28566d3c8332c953272a247a2ac36d50cf6b4e299f1aea419L209

测试代码

https://github.com/gogf/gf/blob/887803e4950019f85e8373e5bef9be221dbddf59/os/glog/glog_z_unit_logger_handler_test.go#L23

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Because this submission deletes related processing https://github.com/gogf/gf/pull/2919/files#diff-0950fd3e63cfb4b28566d3c8332c953272a247a2ac36d50cf6b4e299f1aea419L209

[hailaz]

@gqcn 有空看看

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@gqcn Have a look when you have time

[gqcn]

@hailaz OK, let me have a check.

[l12ab]

遇到了同样的情况，in.Content为空

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Encountered the same situation, in.Content is empty