Avoid an unnecessary allocation calling permutedims

[fingolfin]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 88.20%. Comparing base (9ac586b) to head (6c4e3d8).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Matrix.jl	0.00%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1931   +/-   ##
=======================================
  Coverage   88.20%   88.20%           
=======================================
  Files         119      119           
  Lines       30377    30377           
=======================================
  Hits        26795    26795           
  Misses       3582     3582           

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