fix: user may be null

[miaulalala]

• Resolves: #
• Target version: main

Summary

Found in my logs during tests:

"CustomMessage":"OC\\Group\\Manager::getUserGroupIds(): Argument #1 ($user) must be of type OCP\\IUser, null given, called in /var/www/html/apps-extra/deck/lib/Db/BoardMapper.php on line 108 in file '/var/www/html/lib/private/Group/Manager.php' line 352"

TODO

• ...

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Documentation (manuals or wiki) has been updated or is not required

[github-actions]

🐢 Performance warning.
It looks like the query count of the integration tests increased with this PR.
Database query count is now 84619 was 84323 (+0.35%)
Please check your code again. If you added a new test this can be expected and the base value in tests/integration/base-query-count.txt can be increased.

[github-actions]

🐢 Performance warning.
It looks like the query count of the integration tests increased with this PR.
Database query count is now 84626 was 84323 (+0.35%)
Please check your code again. If you added a new test this can be expected and the base value in tests/integration/base-query-count.txt can be increased.

[miaulalala]

/backport to stable33

[miaulalala]

/backport to stable32

[backportbot]

The backport to stable32 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable32
git pull origin stable32

# Create the new backport branch
git checkout -b backport/7705/stable32

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick fbfb88a8

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/7705/stable32

Error: Failed to create pull request: Validation Failed: {"resource":"PullRequest","code":"custom","message":"A pull request already exists for nextcloud:backport/7705/stable32."} - https://docs.github.com/rest/pulls/pulls#create-a-pull-request

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.