Re-fix setOrder

[jeffry1829]

Previous fix on this problem cause GPU test to fail.

This time the RegularNetwork::CtTree_to_eisumpath function is fixed.

This is related to #440

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 16.60%. Comparing base (5d37d81) to head (dea928d).
Report is 4 commits behind head on dev-master.

Files with missing lines	Patch %	Lines
src/RegularNetwork.cpp	0.00%	0 Missing and 5 partials ⚠️

Additional details and impacted files

@@              Coverage Diff               @@
##           dev-master     #458      +/-   ##
==============================================
+ Coverage       16.56%   16.60%   +0.04%     
==============================================
  Files             221      221              
  Lines           48481    48486       +5     
  Branches        20264    20271       +7     
==============================================
+ Hits             8030     8052      +22     
+ Misses          36176    36141      -35     
- Partials         4275     4293      +18     

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