Cleanup constructor workarounds

[jwillemsen]

* ridlbe/c++11/templates/cli/hdr/interface_post.erb:
* ridlbe/c++11/templates/cli/hdr/union_post.erb:
* ridlbe/c++11/templates/cli/hdr/valuetype_obv.erb:
* ridlbe/c++11/templates/cli/inl/union_inl.erb:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.90%. Comparing base (1c4321f) to head (06b2690).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #415      +/-   ##
==========================================
- Coverage   59.90%   59.90%   -0.01%     
==========================================
  Files         605      605              
  Lines       48567    48566       -1     
  Branches     4299     4294       -5     
==========================================
- Hits        29094    29092       -2     
  Misses      16281    16281              
- Partials     3192     3193       +1     

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