fix: use optional chaining in bin catch block

[mrlubos]

Closes #519

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🦋 Changeset detected

Latest commit: d9f7e16

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hey-api/openapi-ts	Patch

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Name	Status	Preview	Comments	Updated (UTC)
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.09%. Comparing base (5574bd4) to head (d9f7e16).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #528   +/-   ##
=======================================
  Coverage   79.09%   79.09%           
=======================================
  Files          74       74           
  Lines        6122     6122           
  Branches      619      619           
=======================================
  Hits         4842     4842           
  Misses       1277     1277           
  Partials        3        3           

Flag	Coverage Δ
unittests	79.09% <ø> (ø)

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