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
• [x] 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. ⚠️

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