Changes for pg_variables and ATX compatibility

[kovdb75]

Changes for pg_variables and ATX compatibility + test

[codecov]

Codecov Report

Merging #46 (417ade1) into stable (70ed62f) will increase coverage by 0.01%.
The diff coverage is 96.42%.

@@            Coverage Diff             @@
##           stable      #46      +/-   ##
==========================================
+ Coverage   96.23%   96.24%   +0.01%     
==========================================
  Files           5        5              
  Lines        1009     1012       +3     
==========================================
+ Hits          971      974       +3     
  Misses         38       38              

Impacted Files	Coverage Δ
pg_variables_record.c	93.00% <50.00%> (ø)
pg_variables.c	96.77% <98.14%> (+0.01%)	⬆️

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