Fixed issue with empty feature file causing nil pointer deref

[lonnblad]

Fix for #286

[codecov]

Codecov Report

Merging #288 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #288   +/-   ##
=======================================
  Coverage   84.91%   84.92%           
=======================================
  Files          16       16           
  Lines        2499     2500    +1     
=======================================
+ Hits         2122     2123    +1     
  Misses        259      259           
  Partials      118      118           

Impacted Files	Coverage Δ
suite.go	87.95% <100.00%> (+0.03%)	⬆️

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[jamescooke]

Thanks for the quick fix - this looks like it fixes #286 for me locally 👍