[stable29] fix: Correctly check result of function

[backportbot]

Backport of #556

Warning, This backport's changes differ from the original and might be incomplete ⚠️

Todo

• Review and resolve any conflicts
• Amend HEAD commit to remove the line stating to skip CI

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[blizzz]

[✘] Check for expected files failed
      The following extra files have been found:
          LICENSES
          .reuse

This is 30 only, and the updater master branch deals with it correctly.

[nickvergessen]

This is 30 only, and the updater master branch deals with it correctly.

I guess it should not test against master in stable branches... same for the PHP versions

[blizzz]

@Altahrim and I discussed that today and we think the same.