Fix bug passing options on MOI.empty!

[odow]

No description provided.

[codecov]

Codecov Report

Merging #102 into master will decrease coverage by 0.15%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #102      +/-   ##
==========================================
- Coverage   64.51%   64.36%   -0.16%     
==========================================
  Files           3        3              
  Lines         465      463       -2     
==========================================
- Hits          300      298       -2     
  Misses        165      165              

Impacted Files	Coverage Δ
src/MOI_wrapper/MOI_wrapper.jl	87.27% <100.00%> (-0.09%)	⬇️

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