skip converting literals to ascii on z/OS

[jBarz]

[codecov-io]

Codecov Report

Merging #521 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #521   +/-   ##
=======================================
  Coverage   58.52%   58.52%           
=======================================
  Files          48       48           
  Lines        2944     2944           
=======================================
  Hits         1723     1723           
  Misses       1221     1221

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