fix bad source location for END token

[quentin]

Fixes #2408

[codecov]

Codecov Report

Merging #2417 (0813e52) into master (2914f7b) will increase coverage by 0.00%.
The diff coverage is 77.88%.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #2417    +/-   ##
========================================
  Coverage   77.75%   77.76%            
========================================
  Files         474      479     +5     
  Lines       31164    31368   +204     
========================================
+ Hits        24232    24392   +160     
- Misses       6932     6976    +44     

Impacted Files	Coverage Δ
src/ast/analysis/typesystem/Type.cpp	47.37% <0.00%> (-0.47%)	⬇️
src/ast/analysis/typesystem/Type.h	50.00% <ø> (ø)
...c/ast/analysis/typesystem/TypeConstrainsAnalysis.h	100.00% <ø> (ø)
src/ast2ram/seminaive/ValueTranslator.h	100.00% <ø> (ø)
src/ast2ram/utility/TranslatorContext.h	100.00% <ø> (ø)
src/include/souffle/utility/SubProcess.h	55.00% <0.00%> (ø)
src/interpreter/Node.h	96.95% <ø> (ø)
src/ram/Variable.h	45.45% <45.45%> (ø)
src/ram/Assign.h	50.00% <50.00%> (ø)
src/ast/transform/SemanticChecker.cpp	95.96% <53.84%> (-1.08%)	⬇️
... and 22 more

... and 1 file with indirect coverage changes