Malloc can create void* type. Fixes #726

[kamphaus]

Fixes #726

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This change is 

[codecov]

Codecov Report

Merging #727 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #727      +/-   ##
==========================================
+ Coverage   81.63%   81.64%   +<.01%     
==========================================
  Files         165      165              
  Lines        9214     9218       +4     
==========================================
+ Hits         7522     7526       +4     
  Misses       1281     1281              
  Partials      411      411

Impacted Files	Coverage Δ
transpiler/binary.go	71.48% <100%> (+0.23%)	⬆️
transpiler/variables.go	84.04% <100%> (+0.12%)	⬆️

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[elliotchance]

Reviewed 3 of 3 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

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