Postinstall.js leaves tmp directory around

[perrinjerome]

I know it's minor, but that temporary directory created here is not removed

vscode-ripgrep/lib/download.js

Lines 254 to 256 in c960152

	if (!await fsExists(tmpDir)) {
	await fsMkdir(tmpDir);
	}

[perrinjerome]

A bit more context on how it was a problem for us, when running on linux by several unix users. Once a first user installs, this creates this file that only this user can modify:

$ ls -asl /tmp/vscode-ripgrep-cache-1.5.7/ripgrep-v11.0.1-2-x86_64-unknown-linux-musl.tar.gz
1908 -rw-r--r-- 1 slapuser8 slapuser8 1953516 Sep 24 01:09 /tmp/vscode-ripgrep-cache-1.5.7/ripgrep-v11.0.1-2-x86_64-unknown-linux-musl.tar.gz

After this, if another unix user tries to install, this fail with:

Finding release for v11.0.1-2
GET https://api.github.com/repos/microsoft/ripgrep-prebuilt/releases/tags/v11.0.1-2
Downloading from https://api.github.com/repos/microsoft/ripgrep-prebuilt/releases/assets/13800816
Downloading to /tmp/vscode-ripgrep-cache-1.5.7/ripgrep-v11.0.1-2-x86_64-unknown-linux-musl.tar.gz
Download options: {"headers":{"user-agent":"vscode-ripgrep","accept":"application/octet-stream"}}
events.js:167
    throw er; // Unhandled 'error' event
    ^

Error: EACCES: permission denied, open '/tmp/vscode-ripgrep-cache-1.5.7/ripgrep-v11.0.1-2-x86_64-unknown-linux-musl.tar.gz'
Emitted 'error' event at:
    at fs.open (internal/fs/streams.js:250:12)
    at FSReqWrap.oncomplete (fs.js:145:20)

We workaround by setting TMPDIR environment variable to different directories per users, but if this postinstall script could delete this file and folder it would be better I feel.

Tired