Fix a test failure on older Ruby versions.
Fix a test failure on older Ruby versions.

srawlins/sass,xzyfer/sass,nickg33/sass,Andrey-Pavlov/sass,jaroot32/sass,nickg33/sass,srinivashappy/sass,Galactix/sass,ridixcr/sass,stewx/sass,schneems/sass,antonifs/sass,Galactix/sass,jaroot32/sass,schneems/sass,zaru/sass,hcatlin/sass,amitsuroliya/sass,nicklima/sass,cmpereirasi/sass,lmetla/sass,OrenBochman/sass,DanteKaris/sass,Nzaga/sass,srawlins/sass,modulexcite/sass,cmpereirasi/sass,PMArtz92/sass,danielfein/sass,dylannnn/sass,srinivashappy/sass,Iamronan/sass,ridixcr/sass,Iamronan/sass,rammy7219/sass,tangposmarvin/sass,dylannnn/sass,rammy7219/sass,zaru/sass,OrenBochman/sass,antonifs/sass,stewx/sass,MetaAshley/sass,Anshdesire/sass,Andrey-Pavlov/sass,liquidmetal/sass,danielfein/sass,saper/sass,amitsuroliya/sass,StephanieMak/sass,HugoRLopes/sass,baiyanghese/sass,saper/sass,MetaAshley/sass,Ahnita/sass,askl56/sass,nicklima/sass,xzyfer/sass,PMArtz92/sass,Industrys/sass,briangonzalez/sass,Industrys/sass,Anshdesire/sass,Nzaga/sass,HugoRLopes/sass,StephanieMak/sass,JuanitoFatas/sass,JuanitoFatas/sass,DanteKaris/sass,Ahnita/sass,liquidmetal/sass,modulexcite/sass,askl56/sass,tangposmarvin/sass,lmetla/sass,hcatlin/sass