dbft: replace boring cycle with fancy condition

[roman-khimov]

It's obviously better this way.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.38%. Comparing base (befa250) to head (ffa8c1f).
Report is 16 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #123      +/-   ##
==========================================
+ Coverage   59.35%   59.38%   +0.03%     
==========================================
  Files          32       32              
  Lines        1823     1817       -6     
==========================================
- Hits         1082     1079       -3     
+ Misses        661      659       -2     
+ Partials       80       79       -1     

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[AnnaShaleva]

BTW, changelog is not updated, but the job is not even started, need to check if it works.

[AliceInHunterland]

magic

Need to update CHANGELOG.

[roman-khimov]

changelog is not updated

This doesn't change the behavior in any way.