Fix compiling structures with a reserved keyword name

[Schamper]

Fixes #65.

No fix is needed in #35 as the compiler already works different there. That's also why I chose a simple fix for this branch, instead of a more in-depth fix in the compiler: it's going to get replaced entirely soon.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7eb3cce) 89.01% compared to head (3accd56) 89.04%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #66      +/-   ##
==========================================
+ Coverage   89.01%   89.04%   +0.02%     
==========================================
  Files          20       20              
  Lines        1857     1862       +5     
==========================================
+ Hits         1653     1658       +5     
  Misses        204      204              

Flag	Coverage Δ
unittests	89.04% <100.00%> (+0.02%)	⬆️

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