fix char[]

[bbbgan]

No description provided.

[codecov-commenter]

Codecov Report

Patch coverage: 79.41% and project coverage change: +0.17 🎉

Comparison is base (2b73fc6) 46.12% compared to head (d507922) 46.29%.

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #179      +/-   ##
==========================================
+ Coverage   46.12%   46.29%   +0.17%     
==========================================
  Files          42       42              
  Lines        5906     5938      +32     
==========================================
+ Hits         2724     2749      +25     
- Misses       3182     3189       +7     

Impacted Files	Coverage Δ
iguana/json_util.hpp	22.72% <ø> (ø)
iguana/json_reader.hpp	73.52% <12.50%> (-6.05%)	⬇️
iguana/json_writer.hpp	100.00% <100.00%> (+6.25%)	⬆️
test/test.cpp	100.00% <100.00%> (ø)
test/unit_test.cpp	99.59% <100.00%> (+0.01%)	⬆️

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