feat: use var instead of init

[wolfogre]

No description provided.

[codecov]

Codecov Report

Merging #3 into master will increase coverage by 2.18%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master       #3      +/-   ##
==========================================
+ Coverage   77.33%   79.51%   +2.18%     
==========================================
  Files           1        3       +2     
  Lines          75       83       +8     
==========================================
+ Hits           58       66       +8     
  Misses          9        9              
  Partials        8        8              

Impacted Files	Coverage Δ
internal/gtag/gtag.go	77.33% <100.00%> (ø)
test/internal/regular/empty_tag.go	100.00% <100.00%> (ø)
test/internal/regular/user_tag.go	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d7c1a33...fcf454d. Read the comment docs.