Fix unnecessary allocations in maximization due to insufficient broadcasting

[devmotion]

Fixes #1188.

Would be good to add tests.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.86%. Comparing base (22be384) to head (8549fe6).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1189      +/-   ##
==========================================
+ Coverage   85.79%   85.86%   +0.06%     
==========================================
  Files          45       45              
  Lines        3577     3586       +9     
==========================================
+ Hits         3069     3079      +10     
+ Misses        508      507       -1     

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[pkofod]

tests

do you want to test the allocations?

I also don't know why the benchmarks failed to run here, they also failed in the iterator PR

[devmotion]

I also don't know why the benchmarks failed to run here, they also failed in the iterator PR

Probably because those are PRs from forks?

[pkofod]

ah yours is also from a fork, of course that must be it

[pkofod]

that seems suboptimal :)