Fix:err is never used

[Tiper-In-Github]

Fix the problem that err is overwritten and becomes invalid

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• Component style update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Internationalization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

coding have warnang: err is never used,Therefore, this problem was discovered and modified

📝 Changelog

Language	Changelog
🇺🇸 English	Add a new err variable to api.GetHourDiffer under other to receive the returns of the two calls respectively, and ignore the err (sysInfo, err := host.Info()) that is not used in the original logic of apis.ServerInfo
🇨🇳 Chinese	为other下的api.GetHourDiffer增加新的err变量，分别接收两次调用的返回,忽略掉apis.ServerInfo在原有逻辑中未使用的err(sysInfo, err := host.Info())

☑️ Self-Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript's definition is updated/provided or not needed
• Changelog is provided or not needed