Fix edge case with compiling loops containing undefined variables

[myzie]

Capture the code the loop is associated with so we can correctly close it out, when there is a compile error.

[codecov]

Codecov Report

Attention: Patch coverage is 59.09091% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 32.99%. Comparing base (ebc2522) to head (0eed241).
Report is 1 commits behind head on main.

Files	Patch %	Lines
object/set.go	41.66%	7 Missing ⚠️
compiler/compiler.go	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #240      +/-   ##
==========================================
+ Coverage   32.82%   32.99%   +0.16%     
==========================================
  Files         129      129              
  Lines       16013    16025      +12     
==========================================
+ Hits         5257     5288      +31     
+ Misses      10124    10111      -13     
+ Partials      632      626       -6     

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