sort bugfix

[xaellison]

Fix #822

[codecov]

Codecov Report

Merging #823 (a8ee9d8) into master (27520e6) will decrease coverage by 0.02%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #823      +/-   ##
==========================================
- Coverage   77.97%   77.95%   -0.03%     
==========================================
  Files         120      120              
  Lines        7396     7397       +1     
==========================================
- Hits         5767     5766       -1     
- Misses       1629     1631       +2     

Impacted Files	Coverage Δ
src/sorting.jl	23.03% <0.00%> (-0.15%)	⬇️
lib/cutensor/CUTENSOR.jl	92.85% <0.00%> (-7.15%)	⬇️

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[xaellison]

tried including a performance thing - it seems to need more testing