Fixes #3237: Fix NullPointerException in Only.verify

[baezzys]

Motivation

In the latest version of mockito-core (5.9.0), the Only.verify method throws a NullPointerException when it attempts to call Reporter.noMoreInteractionsWanted with a null argument. This occurs because the method InvocationsFinder.findFirstUnverified can return null, but this is not handled properly in Only.verify.

This fixes #3237

Changes

• Added a null check for the result of InvocationsFinder.findFirstUnverified in Only.verify. If the result is null, Reporter.noMoreInteractionsWanted is not called.

Checklist

• [v] Read the contributing guide
• [v] PR should be motivated, i.e. what does it fix, why, and if relevant how
• [v] If possible / relevant include an example in the description, that could help all readers
  including project members to get a better picture of the change
• [v] Avoid other runtime dependencies
• [v] Meaningful commit history ; intention is important please rebase your commit history so that each
  commit is meaningful and help the people that will explore a change in 2 years
• [v] The pull request follows coding style
• [v] Mention Fixes #<issue number> in the description if relevant
• [v] At least one commit should mention Fixes #<issue number> if relevant

[TimvdLippe]

Thanks for the fix and regression test!

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.36%. Comparing base (c54e43b) to head (4dcd1b7).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #3349   +/-   ##
=========================================
  Coverage     85.35%   85.36%           
- Complexity     2926     2927    +1     
=========================================
  Files           336      336           
  Lines          8907     8908    +1     
  Branches       1109     1110    +1     
=========================================
+ Hits           7603     7604    +1     
  Misses         1013     1013           
  Partials        291      291           

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