Convert vim.NIL in client response item and itemDefaults to nil

[ErikReider]

Fixes: #2212

[wsdjeg]

Hmm, why the job is failed, maybe need to check the ci system.

[ErikReider]

@wsdjeg sorry for the ping, but is there anything that needs changing?

[wsdjeg]

merged, thanks:)

[saatom]

Maybe it's something with my setup but this commit causes cmp to intermittently break. If I repeatedly run nvim test.txt, one out of every three or four times I will get the following error whenever I try to type a command in the (nvim) command line (or do anything that would normally invoke cmp).

Reverting to commit da88697 fixes this issue, thus I suspect something in this commit is the culprit. Can anyone else corroborate this issue?

[wongak]

Maybe it's something with my setup but this commit causes cmp to intermittently break. If I repeatedly run nvim test.txt, one out of every three or four times I will get the following error whenever I try to type a command in the (nvim) command line (or do anything that would normally invoke cmp).

Reverting to commit da88697 fixes this issue, thus I suspect something in this commit is the culprit. Can anyone else corroborate this issue?

@saatom I have the exact same issue and "solved" it the same way. Still trying to figure out what might cause this. I'm using lazy, so maybe there is an issue with loading the utils. But it seems really weird.