clang 13 omp

[mattdowle]

Closes #5122

[codecov]

Codecov Report

Merging #5172 (558fcca) into master (1e32776) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master    #5172   +/-   ##
=======================================
  Coverage   99.38%   99.38%           
=======================================
  Files          77       77           
  Lines       14507    14507           
=======================================
  Hits        14418    14418           
  Misses         89       89           

Impacted Files	Coverage Δ
src/frollR.c	100.00% <ø> (ø)
src/types.c	100.00% <ø> (ø)
src/init.c	100.00% <100.00%> (ø)

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[mattdowle]

@jangorecki 1.14.2 will be just this patch. I'll backport it locally so I'm not intending to git tag v1.14.2. Hope that's ok.