[BlindMythos] 守護星表チェックでResultを使用

[blhsrwznrghfzpr]

#423 のブラインド・ミトスRPGの対応の追加です

#460 に含まれていない「守護星表チェック」の修正になります

[codecov]

Codecov Report

Merging #461 (3739d1c) into master (ff0cc55) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

❗ Current head 3739d1c differs from pull request most recent head 7b711a1. Consider uploading reports for the commit 7b711a1 to get more accurate results

@@            Coverage Diff             @@
##           master     #461      +/-   ##
==========================================
- Coverage   95.26%   95.26%   -0.01%     
==========================================
  Files         289      289              
  Lines       18760    18756       -4     
==========================================
- Hits        17871    17867       -4     
  Misses        889      889              

Impacted Files	Coverage Δ
lib/bcdice/game_system/BlindMythos.rb	100.00% <100.00%> (ø)

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[ysakasin]

ありがとうございます！