fix: GetEuclidGCD(0, 0) is 0

[vil02]

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Describe your change:

GetEuclidGCD(0, 0) is perfectly fine and it is 0.

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new JavaScript files are placed inside an existing directory.
• All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames.
  Example:UserProfile.js is allowed but userprofile.js,Userprofile.js,user-Profile.js,userProfile.js are not
• All new algorithms have a URL in their comments that points to Wikipedia or another similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.64%. Comparing base (0e0cf98) to head (4482c8c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1621   +/-   ##
=======================================
  Coverage   83.63%   83.64%           
=======================================
  Files         377      377           
  Lines       19745    19744    -1     
  Branches     2912     2914    +2     
=======================================
+ Hits        16513    16514    +1     
+ Misses       3232     3230    -2     

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