Fix remainder by zero

[georgeroman]

Fixes #780

[codecov]

Codecov Report

Merging #882 into master will increase coverage by 0.01%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master     #882      +/-   ##
==========================================
+ Coverage   59.30%   59.31%   +0.01%     
==========================================
  Files         165      165              
  Lines       10342    10381      +39     
==========================================
+ Hits         6133     6158      +25     
- Misses       4209     4223      +14     

Impacted Files	Coverage Δ
boa/src/value/operations.rs	47.29% <83.33%> (+0.56%)	⬆️
boa/src/object/gcobject.rs	65.60% <0.00%> (-7.64%)	⬇️
boa/src/builtins/object/mod.rs	64.00% <0.00%> (-0.87%)	⬇️
boa/src/builtins/json/mod.rs	82.05% <0.00%> (-0.85%)	⬇️
boa/src/object/mod.rs	46.45% <0.00%> (-0.54%)	⬇️
boa/src/value/display.rs	88.50% <0.00%> (-0.14%)	⬇️
boa/src/context.rs	61.64% <0.00%> (+0.55%)	⬆️
boa/src/value/mod.rs	74.58% <0.00%> (+0.80%)	⬆️
boa/src/builtins/regexp/mod.rs	70.96% <0.00%> (+0.96%)	⬆️
boa/src/object/internal_methods.rs	57.97% <0.00%> (+2.06%)	⬆️
... and 2 more

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[HalidOdat]

This looks good! check my comment :)

[HalidOdat]

Looks good to me! :)

[Razican]

Looks good, thanks!