Fix OpenAPI example crash in Visual Studio 2022 v17.9.0

[bkoelman]

Fixes #1463.

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• N/A: Adapted tests
• N/A: Documentation updated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2af36db) 90.70% compared to head (dd71370) 90.70%.

Additional details and impacted files

@@           Coverage Diff            @@
##           openapi    #1464   +/-   ##
========================================
  Coverage    90.70%   90.70%           
========================================
  Files          390      390           
  Lines        12785    12785           
  Branches      2057     2054    -3     
========================================
  Hits         11596    11596           
  Misses         774      774           
  Partials       415      415           

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