快速切换buffer会导致报错，但不影响使用

[sheldonleung]

我在vim中设置给:bn和:bp绑定了快捷键，打开修改过内容的几个文件，快速在两个文件之间切换会导致报错。不过这个问题并不影响实际使用，只是在状态栏会提示错误信息。
我把coc-git卸载之后，在两个文件中快速切换导致报错的问题就没有了。
另外我在neovim中测试没有出现这个情况。

vim版本：
VIM - Vi IMproved 9.0 (2022 Jun 28, 编译于 Oct 28 2023 22:49:40)
MS-Windows 64 位控制台版本
包含补丁: 1-2081

coc-git版本： 2.7.0

日志：
2023-11-02T11:02:56.885 ERROR (pid:5444) [node-client] - request error on "nvim_buf_get_option" [ 'fileencoding' ] Error: request error on "nvim_buf_get_optio
n" - Invalid buffer id: 3 on api "buf_get_option" [3,"fileencoding"]
11 at new GitBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:6679:21)
12 at GitService.createBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:7548:12)
13 at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
14 2023-11-02T11:02:56.885 ERROR (pid:5444) [server] - unhandledRejection Promise {
15 Error: request error on "nvim_buf_get_option" - Invalid buffer id: 3 on api "buf_get_option" [3,"fileencoding"]
16 at new GitBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:6679:21)
17 at GitService.createBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:7548:12)
18 at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
19 } Error: request error on "nvim_buf_get_option" - Invalid buffer id: 3 on api "buf_get_option" [3,"fileencoding"]
20 at new GitBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:6679:21)
21 at GitService.createBuffer (C:\Users\SheldonLeung\AppData\Local\coc\extensions\node_modules\coc-git\lib\index.js:7548:12)
22 at process.processTicksAndRejections (node:internal/process/task_queues:95:5)