Fit broken matmul test

[andreasnoack]

Since similar returns uninitialized memory, there is not reason to expect the two invocations to return the same values.

The broken test caused https://buildkite.com/julialang/linearalgebra-dot-jl/builds/517#0196337d-14ef-4846-be5c-85e92f72fd23/203-354

[jishnub]

Thank you for spotting this! I'd just suggest changing the zero(A) to copy(A), so that the scaling by beta is non-trivial

[andreasnoack]

I'd just suggest changing the zero(A) to copy(A), so that the scaling by beta is non-trivial

Done in https://github.com/JuliaLang/LinearAlgebra.jl/pull/1288/commits

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.03%. Comparing base (222f7f2) to head (4e4ac10).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1288      +/-   ##
==========================================
- Coverage   92.04%   92.03%   -0.01%     
==========================================
  Files          34       34              
  Lines       15499    15499              
==========================================
- Hits        14266    14265       -1     
- Misses       1233     1234       +1     

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[ViralBShah]

Does this need backporting?

[jishnub]

No, the test was added recently and isn't being backported, so the fix doesn't need backporting either.