Fix implicit null value before collect entry

[goccy]

fix #471

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.66%. Comparing base (950afad) to head (ef4b9eb).

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #490      +/-   ##
==========================================
+ Coverage   77.64%   77.66%   +0.01%     
==========================================
  Files          18       18              
  Lines        5870     5873       +3     
==========================================
+ Hits         4558     4561       +3     
+ Misses       1038     1037       -1     
- Partials      274      275       +1