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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