Add hotfix for url issue with single variable
Add hotfix for url issue with single variable

Fixes https://github.com/sass/libsass/issues/1087

technoAri/libsass,errorx666/libsass,khchanel/libsass,mtwebster/mint-libsass,khchanel/libsass,saper/libsass,FishingCactus/libsass,technoAri/libsass,am11/libsass,mikebarkas/libsass,TBAPI-0KA/NSass,TBAPI-0KA/NSass,errorx666/libsass,mikebarkas/libsass,panicinc/libsass,technoAri/libsass,am11/libsass,panicinc/libsass,FishingCactus/libsass,TBAPI-0KA/NSass,panicinc/libsass,TBAPI-0KA/NSass,mtwebster/mint-libsass,mtwebster/mint-libsass,technoAri/libsass,khchanel/libsass,mikebarkas/libsass,mikebarkas/libsass,FishingCactus/libsass,TBAPI-0KA/NSass,khchanel/libsass,am11/libsass,technoAri/libsass,FishingCactus/libsass,mtwebster/mint-libsass,am11/libsass,FishingCactus/libsass,mikebarkas/libsass,mtwebster/mint-libsass,khchanel/libsass,panicinc/libsass,am11/libsass,saper/libsass,errorx666/libsass,saper/libsass,errorx666/libsass,saper/libsass,TBAPI-0KA/NSass,panicinc/libsass,saper/libsass