Fix the segfault in the scheduling example

[yamaguchi1024]

Fixes #678

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.75%. Comparing base (d328dc4) to head (ef62ace).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #679   +/-   ##
=======================================
  Coverage   87.75%   87.75%           
=======================================
  Files          84       84           
  Lines       20637    20637           
=======================================
  Hits        18110    18110           
  Misses       2527     2527           

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[skeqiqevian]

I think it looks good. Unfortunately, Exo can't catch bugs where users call the generated function with the wrong arguments 😅.