Add a safety check for undefined line in getFoldWidgetRange funct…

[farkaskrisztian]

If you start typing 'CASE', an error occurs because there is no 'END' and the line variable is undefined.

Add a safety check for undefined line in getFoldWidgetRange funct…

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Pull Request Checklist:

• No backwards incompatible changes were made to Ace's public interface which is defined through the main typings file (ace.d.ts) and its references:
  • https://github.com/ajaxorg/ace/blob/master/ace.d.ts
  • https://github.com/ajaxorg/ace/blob/master/ace-modes.d.ts
  • https://github.com/ajaxorg/ace/blob/master/ace-extensions.d.ts

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 87.84%. Comparing base (e9c0810) to head (06a1bab).

Files with missing lines	Patch %	Lines
src/mode/folding/sqlserver.js	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5871   +/-   ##
=======================================
  Coverage   87.84%   87.84%           
=======================================
  Files         622      622           
  Lines       46388    46388           
  Branches     7605     7605           
=======================================
  Hits        40750    40750           
  Misses       5638     5638           

Flag	Coverage Δ
unittests	87.84% <0.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ 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.