ada: Fix crash with is at EOF

[b4n]

Fixes #4284.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.96%. Comparing base (2fd182c) to head (33d1d1b).
⚠️ Report is 4 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4285   +/-   ##
=======================================
  Coverage   85.96%   85.96%           
=======================================
  Files         247      247           
  Lines       63492    63492           
=======================================
  Hits        54584    54584           
  Misses       8908     8908           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[masatake]

I fixed circleci.yml in #4288. Could you rebase this PR on the latest master branch?

[b4n]

@masatake done, but I now have a cancelled check (timeout I guess?)

[masatake]

@b4n I reran the failed test. Now all of them have passed. Please, merge this.