将文件上传到百度云出错，out of range

[Ted-bug]

panic: runtime error: slice bounds out of range [1:0]

goroutine 9 [running]:
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).deleteIndex(...)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:116
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).clearModTimeChange(0xa2a4fd8)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:183 +0x4cb
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).Search(0xa2a4fd8, 0xa0c8f00, 0xa2d8480)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:145 +0x39
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).prepareFile(0xa0c8f50)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:77 +0xca
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).Run(0xa0c8f50, 0x0)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:356 +0x1dc
github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute.func1(0xa2b5080, 0xa2c8f18, 0xa2c4d10)
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:94 +0x54
created by github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:91 +0x68
panic: runtime error: slice bounds out of range [1:0]

goroutine 6 [running]:
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).deleteIndex(...)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:116
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).clearModTimeChange(0xa2a4fd8)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:183 +0x4cb
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).Search(0xa2a4fd8, 0xa0c8d20, 0xa2d8000)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:145 +0x39
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).prepareFile(0xa0c8d70)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:77 +0xca
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).Run(0xa0c8d70, 0x0)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:356 +0x1dc
github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute.func1(0xa2b5080, 0xa2c8f18, 0xa2c4cb0)
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:94 +0x54
created by github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:91 +0x68
panic: runtime error: slice bounds out of range [1:0]

goroutine 8 [running]:
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).deleteIndex(...)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:116
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).clearModTimeChange(0xa2a4fd8)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:183 +0x4cb
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadingDatabase).Search(0xa2a4fd8, 0xa0c8e60, 0xa2d8300)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_database.go:145 +0x39
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).prepareFile(0xa0c8eb0)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:77 +0xca
github.com/qjfoidnh/BaiduPCS-Go/internal/pcsfunctions/pcsupload.(*UploadTaskUnit).Run(0xa0c8eb0, 0x0)
/home/liu/Projects/BaiduPCS-Go/internal/pcsfunctions/pcsupload/upload_task_unit.go:356 +0x1dc
github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute.func1(0xa2b5080, 0xa2c8f18, 0xa2c4cf0)
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:94 +0x54
created by github.com/qjfoidnh/BaiduPCS-Go/pcsutil/taskframework.(*TaskExecutor).Execute
/home/liu/Projects/BaiduPCS-Go/pcsutil/taskframework/executor.go:91 +0x68

[Ted-bug]

图中我加了点自定义的输出信息，可以发现：文件夹上传时，读取了两次pcs_uploading.json中获取到的信息（代码中并发上传文件，共用database）。
当获取到的上传中文件路径不存在时，会执行切片删除元素操作，此时便会出错。
解决方式：手动删除pcs_uploading.json文件,或者更换使用为线程安全的sync.Map