remove unbound argument

[jverzani]

[codecov-commenter]

Codecov Report

Merging #476 (926d904) into master (ff52d9b) will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #476   +/-   ##
=======================================
  Coverage   55.96%   55.96%           
=======================================
  Files          19       19           
  Lines        1181     1181           
=======================================
  Hits          661      661           
  Misses        520      520           

Impacted Files	Coverage Δ
src/utils.jl	81.89% <100.00%> (ø)

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