Fix ITILSolution given error

[Lainow]

Checklist before requesting a review

Please delete options that are not relevant.

• I have performed a self-review of my code.
• I have added tests (when available) that prove my fix is effective or that my feature works.
• I have updated the CHANGELOG with a short functional description of the fix or new feature.
• This change requires a documentation update.

Description

• Here is a brief description of what this PR does
  Fix Controller::requireFieldsToClose(): Argument #1 ($item) must be of type CommonITILObject, ITILSolution given error

Screenshots (if appropriate):

[Rom1-B]

??? 0 files changed ???

[Lainow]

??? 0 files changed ???

That should be fine now.