Misc fix

[masatake]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (ed846e4) 82.99% compared to head (b9d073b) 82.99%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3724   +/-   ##
=======================================
  Coverage   82.99%   82.99%           
=======================================
  Files         226      226           
  Lines       55003    55003           
=======================================
  Hits        45650    45650           
  Misses       9353     9353           

Impacted Files	Coverage Δ
main/field.c	92.60% <100.00%> (ø)
main/fmt.c	86.74% <100.00%> (ø)
main/lregex.c	82.87% <100.00%> (ø)
main/options.c	83.83% <100.00%> (ø)
main/parse.c	95.60% <100.00%> (ø)
main/xtag.c	94.57% <100.00%> (ø)

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