Map second fix empty preds

[tkupek]

Before submitting

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• Did you read the contributor guideline, Pull Request section?
• Did you make sure to update the docs?
• Did you write any new necessary tests?

What does this PR do?

Does the same as #594 but fixes an issue, where we only check if the first prediction is empty and not the full list.

PR review

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[codecov]

Codecov Report

Merging #610 (dce9163) into master (fef83a0) will decrease coverage by 0%.
The diff coverage is 100%.

@@          Coverage Diff          @@
##           master   #610   +/-   ##
=====================================
- Coverage      95%    95%   -0%     
=====================================
  Files         150    150           
  Lines        5308   5308           
=====================================
- Hits         5050   5048    -2     
- Misses        258    260    +2