[backend] Avoid NPE on calculate results

[RomuDeuxfois]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 32.07%. Comparing base (c520d6b) to head (4ae0e51).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...main/java/io/openbas/utils/AtomicTestingUtils.java	0.00%	4 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1779      +/-   ##
============================================
- Coverage     32.08%   32.07%   -0.01%     
  Complexity     1609     1609              
============================================
  Files           561      561              
  Lines         16841    16845       +4     
  Branches        973      973              
============================================
  Hits           5403     5403              
- Misses        11194    11198       +4     
  Partials        244      244              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.